diff --git a/Source/cmStringCommand.cxx b/Source/cmStringCommand.cxx
index f41d5826c..4472a96c5 100644
--- a/Source/cmStringCommand.cxx
+++ b/Source/cmStringCommand.cxx
@@ -68,8 +68,6 @@ bool cmStringCommand::HandleToUpperLowerCommand(
   std::string outvar = args[2];
   std::string output;
 
-  bool first = true;
-
   if (toUpper) 
     {
     output = cmSystemTools::UpperCase(args[1]);