diff --git a/lib/tokenlist.cpp b/lib/tokenlist.cpp
index e8a8d05f7..31261ee03 100644
--- a/lib/tokenlist.cpp
+++ b/lib/tokenlist.cpp
@@ -963,7 +963,7 @@ static Token * createAstAtToken(Token *tok, bool cpp)
     return tok;
 }
 
-void TokenList::createAst() const
+void TokenList::createAst()
 {
     for (Token *tok = _front; tok; tok = tok ? tok->next() : NULL) {
         tok = createAstAtToken(tok, isCPP());
diff --git a/lib/tokenlist.h b/lib/tokenlist.h
index c2005d613..4d4a6cf77 100644
--- a/lib/tokenlist.h
+++ b/lib/tokenlist.h
@@ -126,7 +126,7 @@ public:
     */
     unsigned long long calculateChecksum() const;
 
-    void createAst() const;
+    void createAst();
 
 private:
     /** Disable copy constructor, no implementation */