diff --git a/Makefile b/Makefile
index 60c16d87b2a..6cbb850ad46 100644
--- a/Makefile
+++ b/Makefile
@@ -491,7 +491,7 @@ $(libcppdir)/checkautovariables.o: lib/checkautovariables.cpp lib/addoninfo.h li
 $(libcppdir)/checkbool.o: lib/checkbool.cpp lib/addoninfo.h lib/astutils.h lib/check.h lib/checkbool.h lib/config.h lib/errortypes.h lib/library.h lib/mathlib.h lib/platform.h lib/settings.h lib/smallvector.h lib/sourcelocation.h lib/standards.h lib/suppressions.h lib/symboldatabase.h lib/templatesimplifier.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/vfvalue.h
 	$(CXX) ${INCLUDE_FOR_LIB} $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $(libcppdir)/checkbool.cpp
 
-$(libcppdir)/checkboost.o: lib/checkboost.cpp lib/addoninfo.h lib/check.h lib/checkboost.h lib/config.h lib/errortypes.h lib/library.h lib/mathlib.h lib/platform.h lib/settings.h lib/sourcelocation.h lib/standards.h lib/suppressions.h lib/symboldatabase.h lib/templatesimplifier.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/vfvalue.h
+$(libcppdir)/checkboost.o: lib/checkboost.cpp lib/check.h lib/checkboost.h lib/config.h lib/errortypes.h lib/library.h lib/mathlib.h lib/sourcelocation.h lib/standards.h lib/symboldatabase.h lib/templatesimplifier.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/vfvalue.h
 	$(CXX) ${INCLUDE_FOR_LIB} $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $(libcppdir)/checkboost.cpp
 
 $(libcppdir)/checkbufferoverrun.o: lib/checkbufferoverrun.cpp externals/tinyxml2/tinyxml2.h lib/addoninfo.h lib/astutils.h lib/check.h lib/checkbufferoverrun.h lib/color.h lib/config.h lib/ctu.h lib/errorlogger.h lib/errortypes.h lib/library.h lib/mathlib.h lib/platform.h lib/settings.h lib/smallvector.h lib/sourcelocation.h lib/standards.h lib/suppressions.h lib/symboldatabase.h lib/templatesimplifier.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/valueflow.h lib/vfvalue.h lib/xml.h
@@ -593,7 +593,7 @@ $(libcppdir)/infer.o: lib/infer.cpp lib/calculate.h lib/config.h lib/errortypes.
 $(libcppdir)/keywords.o: lib/keywords.cpp lib/config.h lib/keywords.h lib/standards.h lib/utils.h
 	$(CXX) ${INCLUDE_FOR_LIB} $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $(libcppdir)/keywords.cpp
 
-$(libcppdir)/library.o: lib/library.cpp externals/tinyxml2/tinyxml2.h lib/addoninfo.h lib/astutils.h lib/config.h lib/errortypes.h lib/library.h lib/mathlib.h lib/path.h lib/platform.h lib/settings.h lib/smallvector.h lib/sourcelocation.h lib/standards.h lib/suppressions.h lib/symboldatabase.h lib/templatesimplifier.h lib/token.h lib/tokenlist.h lib/utils.h lib/valueflow.h lib/vfvalue.h lib/xml.h
+$(libcppdir)/library.o: lib/library.cpp externals/tinyxml2/tinyxml2.h lib/astutils.h lib/config.h lib/errortypes.h lib/library.h lib/mathlib.h lib/path.h lib/smallvector.h lib/sourcelocation.h lib/standards.h lib/symboldatabase.h lib/templatesimplifier.h lib/token.h lib/tokenlist.h lib/utils.h lib/valueflow.h lib/vfvalue.h lib/xml.h
 	$(CXX) ${INCLUDE_FOR_LIB} $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $(libcppdir)/library.cpp
 
 $(libcppdir)/mathlib.o: lib/mathlib.cpp externals/simplecpp/simplecpp.h lib/config.h lib/errortypes.h lib/mathlib.h lib/utils.h
@@ -626,7 +626,7 @@ $(libcppdir)/settings.o: lib/settings.cpp externals/picojson/picojson.h lib/addo
 $(libcppdir)/summaries.o: lib/summaries.cpp lib/addoninfo.h lib/analyzerinfo.h lib/config.h lib/errortypes.h lib/library.h lib/mathlib.h lib/platform.h lib/settings.h lib/sourcelocation.h lib/standards.h lib/summaries.h lib/suppressions.h lib/symboldatabase.h lib/templatesimplifier.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/vfvalue.h
 	$(CXX) ${INCLUDE_FOR_LIB} $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $(libcppdir)/summaries.cpp
 
-$(libcppdir)/suppressions.o: lib/suppressions.cpp externals/tinyxml2/tinyxml2.h lib/addoninfo.h lib/color.h lib/config.h lib/errorlogger.h lib/errortypes.h lib/library.h lib/mathlib.h lib/path.h lib/platform.h lib/settings.h lib/standards.h lib/suppressions.h lib/templatesimplifier.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/vfvalue.h lib/xml.h
+$(libcppdir)/suppressions.o: lib/suppressions.cpp externals/tinyxml2/tinyxml2.h lib/color.h lib/config.h lib/errorlogger.h lib/errortypes.h lib/mathlib.h lib/path.h lib/standards.h lib/suppressions.h lib/templatesimplifier.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/vfvalue.h lib/xml.h
 	$(CXX) ${INCLUDE_FOR_LIB} $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $(libcppdir)/suppressions.cpp
 
 $(libcppdir)/templatesimplifier.o: lib/templatesimplifier.cpp lib/addoninfo.h lib/color.h lib/config.h lib/errorlogger.h lib/errortypes.h lib/library.h lib/mathlib.h lib/platform.h lib/settings.h lib/standards.h lib/suppressions.h lib/templatesimplifier.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/vfvalue.h
diff --git a/cli/cmdlineparser.cpp b/cli/cmdlineparser.cpp
index 82ef08a4179..4f4026ffb16 100644
--- a/cli/cmdlineparser.cpp
+++ b/cli/cmdlineparser.cpp
@@ -797,9 +797,9 @@ CmdLineParser::Result CmdLineParser::parseFromArgs(int argc, const char* const a
                 }
 
                 if (str == "c")
-                    mSettings.enforcedLang = Settings::Language::C;
+                    mSettings.enforcedLang = Standards::Language::C;
                 else if (str == "c++")
-                    mSettings.enforcedLang = Settings::Language::CPP;
+                    mSettings.enforcedLang = Standards::Language::CPP;
                 else {
                     mLogger.printError("unknown language '" + str + "' enforced.");
                     return Result::Fail;
diff --git a/gui/mainwindow.cpp b/gui/mainwindow.cpp
index 323f0255870..7f88449b635 100644
--- a/gui/mainwindow.cpp
+++ b/gui/mainwindow.cpp
@@ -392,10 +392,10 @@ void MainWindow::loadSettings()
     mUI->mActionToolBarFilter->setChecked(showFilterToolbar);
     mUI->mToolBarFilter->setVisible(showFilterToolbar);
 
-    const Settings::Language enforcedLanguage = (Settings::Language)mSettings->value(SETTINGS_ENFORCED_LANGUAGE, 0).toInt();
-    if (enforcedLanguage == Settings::CPP)
+    const Standards::Language enforcedLanguage = (Standards::Language)mSettings->value(SETTINGS_ENFORCED_LANGUAGE, 0).toInt();
+    if (enforcedLanguage == Standards::Language::CPP)
         mUI->mActionEnforceCpp->setChecked(true);
-    else if (enforcedLanguage == Settings::C)
+    else if (enforcedLanguage == Standards::Language::C)
         mUI->mActionEnforceC->setChecked(true);
     else
         mUI->mActionAutoDetectLanguage->setChecked(true);
@@ -469,11 +469,11 @@ void MainWindow::saveSettings() const
     mSettings->setValue(SETTINGS_TOOLBARS_FILTER_SHOW, mUI->mToolBarFilter->isVisible());
 
     if (mUI->mActionEnforceCpp->isChecked())
-        mSettings->setValue(SETTINGS_ENFORCED_LANGUAGE, Settings::CPP);
+        mSettings->setValue(SETTINGS_ENFORCED_LANGUAGE, Standards::Language::CPP);
     else if (mUI->mActionEnforceC->isChecked())
-        mSettings->setValue(SETTINGS_ENFORCED_LANGUAGE, Settings::C);
+        mSettings->setValue(SETTINGS_ENFORCED_LANGUAGE, Standards::Language::C);
     else
-        mSettings->setValue(SETTINGS_ENFORCED_LANGUAGE, Settings::None);
+        mSettings->setValue(SETTINGS_ENFORCED_LANGUAGE, Standards::Language::None);
 
     mApplications->saveSettings();
 
@@ -1091,7 +1091,7 @@ Settings MainWindow::getCppcheckSettings()
         result.platform.set((Platform::Type) mSettings->value(SETTINGS_CHECKED_PLATFORM, 0).toInt());
     result.standards.setCPP(mSettings->value(SETTINGS_STD_CPP, QString()).toString().toStdString());
     result.standards.setC(mSettings->value(SETTINGS_STD_C, QString()).toString().toStdString());
-    result.enforcedLang = (Settings::Language)mSettings->value(SETTINGS_ENFORCED_LANGUAGE, 0).toInt();
+    result.enforcedLang = (Standards::Language)mSettings->value(SETTINGS_ENFORCED_LANGUAGE, 0).toInt();
 
     if (result.jobs <= 1) {
         result.jobs = 1;
diff --git a/lib/cppcheck.cpp b/lib/cppcheck.cpp
index 521b3f10603..032a4a47049 100644
--- a/lib/cppcheck.cpp
+++ b/lib/cppcheck.cpp
@@ -188,13 +188,13 @@ static void createDumpFile(const Settings& settings,
 
     std::string language;
     switch (settings.enforcedLang) {
-    case Settings::Language::C:
+    case Standards::Language::C:
         language = " language=\"c\"";
         break;
-    case Settings::Language::CPP:
+    case Standards::Language::CPP:
         language = " language=\"cpp\"";
         break;
-    case Settings::Language::None:
+    case Standards::Language::None:
         if (Path::isCPP(filename))
             language = " language=\"cpp\"";
         else if (Path::isC(filename))
diff --git a/lib/settings.h b/lib/settings.h
index be106ef98c3..cfe63e7e404 100644
--- a/lib/settings.h
+++ b/lib/settings.h
@@ -182,12 +182,8 @@ class CPPCHECKLIB WARN_UNUSED Settings {
     bool dump{};
     std::string dumpFile;
 
-    enum Language {
-        None, C, CPP
-    };
-
     /** @brief Name of the language that is enforced. Empty per default. */
-    Language enforcedLang{};
+    Standards::Language enforcedLang{};
 
 #if defined(USE_WINDOWS_SEH) || defined(USE_UNIX_SIGNAL_HANDLING)
     /** @brief Is --exception-handling given */
diff --git a/lib/standards.h b/lib/standards.h
index 619ce623594..4b1469164ca 100644
--- a/lib/standards.h
+++ b/lib/standards.h
@@ -34,6 +34,8 @@
  * This struct contains all possible standards that cppcheck recognize.
  */
 struct Standards {
+    enum Language { None, C, CPP };
+
     /** C code standard */
     enum cstd_t { C89, C99, C11, CLatest = C11 } c = CLatest;
 
diff --git a/lib/tokenlist.cpp b/lib/tokenlist.cpp
index 5e45b8d57d3..4f482d6f177 100644
--- a/lib/tokenlist.cpp
+++ b/lib/tokenlist.cpp
@@ -50,7 +50,7 @@ TokenList::TokenList(const Settings* settings) :
     mSettings(settings)
 {
     mTokensFrontBack.list = this;
-    if (mSettings && (mSettings->enforcedLang != Settings::Language::None)) {
+    if (mSettings && (mSettings->enforcedLang != Standards::Language::None)) {
         mLang = mSettings->enforcedLang;
     }
 }
@@ -84,11 +84,11 @@ void TokenList::deallocateTokens()
 void TokenList::determineCppC()
 {
     // only try to determine it if it wasn't enforced
-    if (mLang == Settings::Language::None) {
+    if (mLang == Standards::Language::None) {
         if (Path::isC(getSourceFilePath()))
-            mLang = Settings::Language::C;
+            mLang = Standards::Language::C;
         else if (Path::isCPP(getSourceFilePath()))
-            mLang = Settings::Language::CPP;
+            mLang = Standards::Language::CPP;
     }
 }
 
diff --git a/lib/tokenlist.h b/lib/tokenlist.h
index 39c58255fb4..3b71d07d156 100644
--- a/lib/tokenlist.h
+++ b/lib/tokenlist.h
@@ -22,7 +22,7 @@
 //---------------------------------------------------------------------------
 
 #include "config.h"
-#include "settings.h"
+#include "standards.h"
 
 #include <cstddef>
 #include <iosfwd>
@@ -31,6 +31,7 @@
 
 class Token;
 class TokenList;
+class Settings;
 
 namespace simplecpp {
     class TokenList;
@@ -61,12 +62,12 @@ class CPPCHECKLIB TokenList {
 
     /** Is the code C. Used for bailouts */
     bool isC() const {
-        return mLang == Settings::Language::C;
+        return mLang == Standards::Language::C;
     }
 
     /** Is the code CPP. Used for bailouts */
     bool isCPP() const {
-        return mLang == Settings::Language::CPP;
+        return mLang == Standards::Language::CPP;
     }
 
     /**
@@ -214,7 +215,7 @@ class CPPCHECKLIB TokenList {
     const Settings* const mSettings{};
 
     /** File is known to be C/C++ code */
-    Settings::Language mLang{Settings::Language::None};
+    Standards::Language mLang{Standards::Language::None};
 };
 
 /// @}
diff --git a/test/testcmdlineparser.cpp b/test/testcmdlineparser.cpp
index 2cb87695e0f..69829ca89fd 100644
--- a/test/testcmdlineparser.cpp
+++ b/test/testcmdlineparser.cpp
@@ -631,17 +631,17 @@ class TestCmdlineParser : public TestFixture {
     void enforceLanguage1() {
         REDIRECT;
         const char * const argv[] = {"cppcheck", "file.cpp"};
-        settings->enforcedLang = Settings::Language::None;
+        settings->enforcedLang = Standards::Language::None;
         ASSERT_EQUALS(CmdLineParser::Result::Success, parser->parseFromArgs(2, argv));
-        ASSERT_EQUALS(Settings::Language::None, settings->enforcedLang);
+        ASSERT_EQUALS(Standards::Language::None, settings->enforcedLang);
     }
 
     void enforceLanguage2() {
         REDIRECT;
         const char * const argv[] = {"cppcheck", "-x", "c++", "file.cpp"};
-        settings->enforcedLang = Settings::Language::None;
+        settings->enforcedLang = Standards::Language::None;
         ASSERT_EQUALS(CmdLineParser::Result::Success, parser->parseFromArgs(4, argv));
-        ASSERT_EQUALS(Settings::Language::CPP, settings->enforcedLang);
+        ASSERT_EQUALS(Standards::Language::CPP, settings->enforcedLang);
     }
 
     void enforceLanguage3() {
@@ -661,17 +661,17 @@ class TestCmdlineParser : public TestFixture {
     void enforceLanguage5() {
         REDIRECT;
         const char * const argv[] = {"cppcheck", "--language=c++", "file.cpp"};
-        settings->enforcedLang = Settings::Language::None;
+        settings->enforcedLang = Standards::Language::None;
         ASSERT_EQUALS(CmdLineParser::Result::Success, parser->parseFromArgs(3, argv));
-        ASSERT_EQUALS(Settings::Language::CPP, settings->enforcedLang);
+        ASSERT_EQUALS(Standards::Language::CPP, settings->enforcedLang);
     }
 
     void enforceLanguage6() {
         REDIRECT;
         const char * const argv[] = {"cppcheck", "--language=c", "file.cpp"};
-        settings->enforcedLang = Settings::Language::None;
+        settings->enforcedLang = Standards::Language::None;
         ASSERT_EQUALS(CmdLineParser::Result::Success, parser->parseFromArgs(3, argv));
-        ASSERT_EQUALS(Settings::Language::C, settings->enforcedLang);
+        ASSERT_EQUALS(Standards::Language::C, settings->enforcedLang);
     }
 
     void enforceLanguage7() {
diff --git a/test/testunusedvar.cpp b/test/testunusedvar.cpp
index a4237aefa2d..6e4645a7832 100644
--- a/test/testunusedvar.cpp
+++ b/test/testunusedvar.cpp
@@ -1822,7 +1822,7 @@ class TestUnusedVar : public TestFixture {
                       errout.str());
 
         Settings s = settings;
-        s.enforcedLang = Settings::C;
+        s.enforcedLang = Standards::Language::C;
         checkStructMemberUsage("struct A {\n" // #10852
                                "    struct B {\n"
                                "        int x;\n"