diff --git a/cli/cppcheckexecutor.cpp b/cli/cppcheckexecutor.cpp
index 832684c967f..4320c020f0f 100644
--- a/cli/cppcheckexecutor.cpp
+++ b/cli/cppcheckexecutor.cpp
@@ -183,10 +183,13 @@ int CppCheckExecutor::check(int argc, const char* const argv[])
         return EXIT_SUCCESS;
     }
 
+    settings.loadSummaries();
+
     mFiles = parser.getFiles();
     mFileSettings = parser.getFileSettings();
 
     mStdLogger = new StdLogger(settings);
+
     CppCheck cppCheck(*mStdLogger, true, executeCommand);
     cppCheck.settings() = settings;
 
@@ -230,9 +233,10 @@ bool CppCheckExecutor::reportSuppressions(const Settings &settings, bool unusedF
 /*
  * That is a method which gets called from check_wrapper
  * */
-int CppCheckExecutor::check_internal(CppCheck& cppcheck)
+int CppCheckExecutor::check_internal(CppCheck& cppcheck) const
 {
-    Settings& settings = cppcheck.settings();
+    const auto& settings = cppcheck.settings();
+    auto& suppressions = cppcheck.settings().nomsg;
 
     if (settings.reportProgress >= 0)
         mStdLogger->resetLatestProgressOutputTime();
@@ -242,8 +246,6 @@ int CppCheckExecutor::check_internal(CppCheck& cppcheck)
     }
 
     if (!settings.buildDir.empty()) {
-        settings.loadSummaries();
-
         std::list<std::string> fileNames;
         for (std::list<std::pair<std::string, std::size_t>>::const_iterator i = mFiles.cbegin(); i != mFiles.cend(); ++i)
             fileNames.emplace_back(i->first);
@@ -256,13 +258,13 @@ int CppCheckExecutor::check_internal(CppCheck& cppcheck)
     unsigned int returnValue;
     if (settings.useSingleJob()) {
         // Single process
-        SingleExecutor executor(cppcheck, mFiles, mFileSettings, settings, settings.nomsg, *mStdLogger);
+        SingleExecutor executor(cppcheck, mFiles, mFileSettings, settings, suppressions, *mStdLogger);
         returnValue = executor.check();
     } else {
 #if defined(THREADING_MODEL_THREAD)
-        ThreadExecutor executor(mFiles, mFileSettings, settings, settings.nomsg, *mStdLogger, CppCheckExecutor::executeCommand);
+        ThreadExecutor executor(mFiles, mFileSettings, settings, suppressions, *mStdLogger, CppCheckExecutor::executeCommand);
 #elif defined(THREADING_MODEL_FORK)
-        ProcessExecutor executor(mFiles, mFileSettings, settings, settings.nomsg, *mStdLogger, CppCheckExecutor::executeCommand);
+        ProcessExecutor executor(mFiles, mFileSettings, settings, suppressions, *mStdLogger, CppCheckExecutor::executeCommand);
 #endif
         returnValue = executor.check();
     }
diff --git a/cli/cppcheckexecutor.h b/cli/cppcheckexecutor.h
index 34157ddfbd0..f54e49dee2e 100644
--- a/cli/cppcheckexecutor.h
+++ b/cli/cppcheckexecutor.h
@@ -101,7 +101,7 @@ class CppCheckExecutor {
      *         given value is returned instead of default 0.
      *         If no errors are found, 0 is returned.
      */
-    int check_internal(CppCheck& cppcheck);
+    int check_internal(CppCheck& cppcheck) const;
 
     /**
      * Filename associated with size of file
diff --git a/cli/cppcheckexecutorseh.cpp b/cli/cppcheckexecutorseh.cpp
index 7f571bd53a6..9ec2df0a2b5 100644
--- a/cli/cppcheckexecutorseh.cpp
+++ b/cli/cppcheckexecutorseh.cpp
@@ -253,7 +253,7 @@ namespace {
  * TODO Check for multi-threading issues!
  *
  */
-int check_wrapper_seh(CppCheckExecutor& executor, int (CppCheckExecutor::*f)(CppCheck&), CppCheck& cppcheck)
+int check_wrapper_seh(CppCheckExecutor& executor, int (CppCheckExecutor::*f)(CppCheck&) const, CppCheck& cppcheck)
 {
     FILE *outputFile = CppCheckExecutor::getExceptionOutput();
     __try {
diff --git a/cli/cppcheckexecutorseh.h b/cli/cppcheckexecutorseh.h
index 56616d95af9..93f51456cde 100644
--- a/cli/cppcheckexecutorseh.h
+++ b/cli/cppcheckexecutorseh.h
@@ -26,7 +26,7 @@
 class CppCheckExecutor;
 class CppCheck;
 
-int check_wrapper_seh(CppCheckExecutor& executor, int (CppCheckExecutor::*f)(CppCheck&), CppCheck& cppcheck);
+int check_wrapper_seh(CppCheckExecutor& executor, int (CppCheckExecutor::*f)(CppCheck&) const, CppCheck& cppcheck);
 
 #endif
 
diff --git a/cli/cppcheckexecutorsig.cpp b/cli/cppcheckexecutorsig.cpp
index 0d1156e0ae7..279a95633c9 100644
--- a/cli/cppcheckexecutorsig.cpp
+++ b/cli/cppcheckexecutorsig.cpp
@@ -298,7 +298,7 @@ static void CppcheckSignalHandler(int signo, siginfo_t * info, void * context)
     }
 }
 
-int check_wrapper_sig(CppCheckExecutor& executor, int (CppCheckExecutor::*f)(CppCheck&), CppCheck& cppcheck)
+int check_wrapper_sig(CppCheckExecutor& executor, int (CppCheckExecutor::*f)(CppCheck&) const, CppCheck& cppcheck)
 {
     // determine stack vs. heap
     char stackVariable;
diff --git a/cli/cppcheckexecutorsig.h b/cli/cppcheckexecutorsig.h
index 4279378e4b1..5c8c161d2ff 100644
--- a/cli/cppcheckexecutorsig.h
+++ b/cli/cppcheckexecutorsig.h
@@ -26,7 +26,7 @@
 class CppCheckExecutor;
 class CppCheck;
 
-int check_wrapper_sig(CppCheckExecutor& executor, int (CppCheckExecutor::*f)(CppCheck&), CppCheck& cppcheck);
+int check_wrapper_sig(CppCheckExecutor& executor, int (CppCheckExecutor::*f)(CppCheck&) const, CppCheck& cppcheck);
 
 #endif // CPPCHECKEXECUTORSIG_H