diff --git a/lang/cem/cpp.ansi/main.c b/lang/cem/cpp.ansi/main.c
index 9f7c1519c..1031b1a85 100644
--- a/lang/cem/cpp.ansi/main.c
+++ b/lang/cem/cpp.ansi/main.c
@@ -75,7 +75,7 @@ compile(argc, argv)
 		break;
 	case 0:
 		FileName = "";
-		WorkingDir = 0;
+		WorkingDir = "";
 		break;
 	default:
 		FileName = argv[0];