diff --git a/util/cpp/chtab.c b/util/cpp/chtab.c
index 8b369f388..c750d9215 100644
--- a/util/cpp/chtab.c
+++ b/util/cpp/chtab.c
@@ -42,6 +42,7 @@ main(argc, argv)
 		}
 	}
 	MkCharIndex();
+	exit(0);
 }
 
 MkCharIndex()