diff --git a/lib/checkbufferoverrun.h b/lib/checkbufferoverrun.h
index c2cb5450e..341b9c069 100644
--- a/lib/checkbufferoverrun.h
+++ b/lib/checkbufferoverrun.h
@@ -244,7 +244,7 @@ public:
     Check::FileInfo * loadFileInfoFromXml(const tinyxml2::XMLElement *xmlElement) const override;
 
     /** @brief Analyse all file infos for all TU */
-    bool analyseWholeProgram(const std::list<Check::FileInfo*> &fileInfo, const Settings& settings, ErrorLogger &errorLogger);
+    bool analyseWholeProgram(const std::list<Check::FileInfo*> &fileInfo, const Settings& settings, ErrorLogger &errorLogger) override;
 
     /**
      * Calculates sizeof value for given type.
diff --git a/lib/checkunusedfunctions.h b/lib/checkunusedfunctions.h
index 2fb1486c2..af30c5829 100644
--- a/lib/checkunusedfunctions.h
+++ b/lib/checkunusedfunctions.h
@@ -67,7 +67,7 @@ public:
     Check::FileInfo *getFileInfo(const Tokenizer *tokenizer, const Settings *settings) const override;
 
     /** @brief Analyse all file infos for all TU */
-    bool analyseWholeProgram(const std::list<Check::FileInfo*> &fileInfo, const Settings& settings, ErrorLogger &errorLogger);
+    bool analyseWholeProgram(const std::list<Check::FileInfo*> &fileInfo, const Settings& settings, ErrorLogger &errorLogger) override;
 
     static CheckUnusedFunctions instance;