ditto for invalid options

diff --git a/src/du.c b/src/du.c
index c132ae7eaf68f78bbe3b9eae38c1e85e61f42697..7fe4746d4bf89ca6b7a345c624d8887f682ec9aa 100644 (file)
--- a/src/du.c
+++ b/src/du.c
@@ -665,12 +665,12 @@ main (int argc, char **argv)
        case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
 
        default:
-         usage (EXIT_FAILURE);
+         fail = 1;
        }
     }
 
   if (fail)
-    exit (EXIT_FAILURE);
+    usage (EXIT_FAILURE);
 
   if (opt_all && opt_summarize_only)
     {