diff --git a/src/tokenize.cpp b/src/tokenize.cpp
index 18eac1b2a..9d8e9035f 100644
--- a/src/tokenize.cpp
+++ b/src/tokenize.cpp
@@ -3699,9 +3699,8 @@ void Tokenizer::syntaxError(const Token *tok, char c)
 
 }
 
-bool Tokenizer::simplifyMathFunctions()
+void Tokenizer::simplifyMathFunctions()
 {
-    bool result = false;
     for (Token *tok = _tokens; tok; tok = tok->next())
     {
         if (Token::Match(tok, "atol ( %str% )"))
@@ -3730,11 +3729,8 @@ bool Tokenizer::simplifyMathFunctions()
 
             // Delete remaining )
             tok->deleteNext();
-            result = true;
         }
     }
-
-    return result;
 }
 
 void Tokenizer::simplifyComma()
diff --git a/src/tokenize.h b/src/tokenize.h
index e50397502..0fb66852f 100644
--- a/src/tokenize.h
+++ b/src/tokenize.h
@@ -281,10 +281,8 @@ private:
 
     /**
      * Simplify e.g. 'atol("0")' into '0'
-     * @return true if modifications to token-list are done.
-     *         false if no modifications are done.
      */
-    bool simplifyMathFunctions();
+    void simplifyMathFunctions();
 
     void insertTokens(Token *dest, const Token *src, unsigned int n);