diff --git a/Source/cmIncludeCommand.cxx b/Source/cmIncludeCommand.cxx
index 5b931713c..e8ee33fd3 100644
--- a/Source/cmIncludeCommand.cxx
+++ b/Source/cmIncludeCommand.cxx
@@ -19,7 +19,7 @@ bool cmIncludeCommand
   if (args.size()< 1 || args.size() > 4)
     {
       this->SetError("called with wrong number of arguments.  "
-                     "Include only takes one file.");
+                     "include() only takes one file.");
       return false;
     }
   bool optional = false;