diff --git a/lib/cppcheck.cpp b/lib/cppcheck.cpp
index 770b45d067c..99d31a50d82 100644
--- a/lib/cppcheck.cpp
+++ b/lib/cppcheck.cpp
@@ -618,18 +618,6 @@ unsigned int CppCheck::checkBuffer(const FileWithDetails &file, const std::strin
     });
 }
 
-// cppcheck-suppress unusedFunction
-unsigned int CppCheck::checkStream(const FileWithDetails &file, const std::string &cfgname, std::istream& fileStream)
-{
-    return checkInternal(file, cfgname,
-                         [&file, &fileStream](TokenList& list) {
-        list.createTokens(fileStream, file.spath());
-    },
-                         [&file, &fileStream](std::vector<std::string>& files, simplecpp::OutputList* outputList) {
-        return simplecpp::TokenList{fileStream, files, file.spath(), outputList};
-    });
-}
-
 unsigned int CppCheck::checkFile(const FileWithDetails& file, const std::string &cfgname)
 {
     return checkInternal(file, cfgname,
diff --git a/lib/cppcheck.h b/lib/cppcheck.h
index 207ef6ae917..56314dd8e32 100644
--- a/lib/cppcheck.h
+++ b/lib/cppcheck.h
@@ -177,16 +177,6 @@ class CPPCHECKLIB CppCheck : ErrorLogger {
     /** @brief There has been an internal error => Report information message */
     void internalError(const std::string &filename, const std::string &msg);
 
-    /**
-     * @brief Check a file using stream
-     * @param file the file
-     * @param cfgname  cfg name
-     * @param fileStream stream the file content can be read from
-     * @return number of errors found
-     */
-    unsigned int checkStream(const FileWithDetails& file, const std::string &cfgname, std::istream& fileStream);
-
-
     /**
      * @brief Check a file
      * @param file the file
diff --git a/lib/tokenlist.cpp b/lib/tokenlist.cpp
index a799e58ba39..4cc00859b25 100644
--- a/lib/tokenlist.cpp
+++ b/lib/tokenlist.cpp
@@ -356,20 +356,6 @@ bool TokenList::createTokens(const uint8_t* data, size_t size, const std::string
 
 //---------------------------------------------------------------------------
 
-bool TokenList::createTokens(std::istream &code, Standards::Language lang)
-{
-    ASSERT_LANG(lang != Standards::Language::None);
-    if (mLang == Standards::Language::None) {
-        mLang = lang;
-    } else {
-        ASSERT_LANG(lang == mLang);
-    }
-
-    return createTokensInternal(code, "");
-}
-
-//---------------------------------------------------------------------------
-
 bool TokenList::createTokens(const uint8_t* data, size_t size, Standards::Language lang)
 {
     ASSERT_LANG(lang != Standards::Language::None);
diff --git a/lib/tokenlist.h b/lib/tokenlist.h
index 57f212bb916..15d80ad5179 100644
--- a/lib/tokenlist.h
+++ b/lib/tokenlist.h
@@ -114,7 +114,6 @@ class CPPCHECKLIB TokenList {
     bool createTokens(const char (&data)[size], const std::string& file0) {
         return createTokens(reinterpret_cast<const uint8_t*>(data), size-1, file0);
     }
-    bool createTokens(std::istream &code, Standards::Language lang);
     bool createTokens(const uint8_t* data, size_t size, Standards::Language lang);
     bool createTokens(const char* data, size_t size, Standards::Language lang) {
         return createTokens(reinterpret_cast<const uint8_t*>(data), size, lang);