diff --git a/Source/cmDocumentVariables.cxx b/Source/cmDocumentVariables.cxx
index 687debc5a..1cab2b584 100644
--- a/Source/cmDocumentVariables.cxx
+++ b/Source/cmDocumentVariables.cxx
@@ -354,7 +354,7 @@ void cmDocumentVariables::DefineVariables(cmake* cm)
      "If true, do not add run time path information.",
      "If this is set to TRUE, then the rpath information "
      "is not added to compiled executables.  The default "
-     "is to add rpath information if the platform supports it."
+     "is to add rpath information if the platform supports it.  "
      "This allows for easy running from the build tree.",false,
      "Variables that Provide Information");
   cm->DefineProperty