diff --git a/config/opal_config_subdir_args.m4 b/config/opal_config_subdir_args.m4
index cfd75ff405..aab1d42fd7 100644
--- a/config/opal_config_subdir_args.m4
+++ b/config/opal_config_subdir_args.m4
@@ -60,7 +60,7 @@ do
 	    ;;
 	-with-platform=* | --with-platform=*)
 	    ;;
-        -with*=internal)
+        --with*=internal)
             ;;
 	*)
 	    case $subdir_arg in