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-rw-r--r--Src/Modules/zutil.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/Src/Modules/zutil.c b/Src/Modules/zutil.c
index 9dd228930..5524a20e5 100644
--- a/Src/Modules/zutil.c
+++ b/Src/Modules/zutil.c
@@ -1326,13 +1326,19 @@ bin_zparseopts(char *nam, char **args, char *ops, int func)
 		}
 		break;
 	    }
-	    if (!o)
+	    if (!o) {
+		o = "";
 		break;
+	    }
 	} else {
 	    args--;
 	    break;
 	}
     }
+    if (!o) {
+	zwarnnam(nam, "missing option descriptions", NULL, 0);
+	return 1;
+    }
     while ((o = dupstring(*args++))) {
 	if (!*o) {
 	    zwarnnam(nam, "invalid option description: %s", o, 0);