diff --git a/Source/cmGetCMakePropertyCommand.cxx b/Source/cmGetCMakePropertyCommand.cxx
index dc24d49d1..8788009c7 100644
--- a/Source/cmGetCMakePropertyCommand.cxx
+++ b/Source/cmGetCMakePropertyCommand.cxx
@@ -26,7 +26,7 @@ bool cmGetCMakePropertyCommand::InitialPass(
     return false;
     }
   
-  int cc;
+  std::vector<std::string>::size_type cc;
   std::string variable = args[0];
   std::string output = "";