diff --git a/lib/checkother.cpp b/lib/checkother.cpp
index 76f256c26..da2b94b10 100644
--- a/lib/checkother.cpp
+++ b/lib/checkother.cpp
@@ -155,7 +155,7 @@ void CheckOther::clarifyCondition()
                     tok2 = tok2->link();
                 else if (Token::Match(tok2, "<|<=|==|!=|>|>=")) {
                     // This might be a template
-                    if (!_tokenizer->code_is_c() && Token::Match(tok2->previous(), "%var% <"))
+                    if (!_tokenizer->isC() && Token::Match(tok2->previous(), "%var% <"))
                         break;
 
                     clarifyConditionError(tok, tok->strAt(2) == "=", false);
@@ -2246,7 +2246,7 @@ static bool isFunction(const std::string &name, const Token *startToken)
 void CheckOther::checkMisusedScopedObject()
 {
     // Skip this check for .c files
-    if (_tokenizer->code_is_c()) {
+    if (_tokenizer->isC()) {
         return;
     }
 
diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 8d4eac617..de3deb59f 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -5674,7 +5674,7 @@ void Tokenizer::simplifyFunctionParameters()
 
 void Tokenizer::simplifyPointerToStandardType()
 {
-    if (!code_is_c())
+    if (!isC())
         return;
 
     for (Token *tok = _tokens; tok; tok = tok->next()) {
@@ -10086,17 +10086,3 @@ void Tokenizer::printUnknownTypes()
             _errorLogger->reportOut(ss.str());
     }
 }
-
-bool Tokenizer::code_is_c() const
-{
-    const std::string fname = getFiles()->at(0);
-    const size_t position   = fname.rfind(".");
-
-    if (position != std::string::npos) {
-        const std::string ext = fname.substr(position);
-        if (ext == ".c" || ext == ".C")
-            return true;
-    }
-
-    return false;
-}
diff --git a/lib/tokenize.h b/lib/tokenize.h
index 5fc491bd8..d359f98da 100644
--- a/lib/tokenize.h
+++ b/lib/tokenize.h
@@ -792,9 +792,6 @@ public:
      */
     void printUnknownTypes();
 
-    /** Checks if the file extensions is .c or .C */
-    bool code_is_c() const;
-
 private:
     /** Disable copy constructor, no implementation */
     Tokenizer(const Tokenizer &);