diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 44258415d..6b711b9cd 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -6526,7 +6526,7 @@ bool Tokenizer::simplifyKnownVariablesGetData(unsigned int varid, Token **_tok2,
         }
 
         // Add a '.0' to a decimal value and therefore convert it to an floating point number.
-        else if (MathLib::isDec(tok2->tokAt(2)->str()) && floatvar) {
+        else if (MathLib::isDec(tok2->strAt(2)) && floatvar) {
             value += ".0";
         }