1 files changed, 1 insertions, 1 deletions
diff --git a/src/util.h b/src/util.h
index 24c0bf9..4dc02d0 100644
--- a/src/util.h
+++ b/src/util.h
@@ -333,7 +333,7 @@ QCString stripLeadingAndTrailingEmptyLines(const QCString &s,int &docLine);
 bool updateLanguageMapping(const QCString &extension,const QCString &parser);
 SrcLangExt getLanguageFromFileName(const QCString& fileName, SrcLangExt defLang=SrcLangExt_Cpp);
 SrcLangExt getLanguageFromCodeLang(QCString &fileName);
-QCString getFileNameExtension(QCString fn);
+QCString getFileNameExtension(const QCString &fn);
 void initDefaultExtensionMapping();
 void addCodeOnlyMappings();