...

diff --git a/MagickCore/option.c b/MagickCore/option.c
index 3beca317db7127f0506f3ea574631034912f7696..41c5bad21a1b4db88bcbfa1380640f8a333dbaf9 100644 (file)
--- a/MagickCore/option.c
+++ b/MagickCore/option.c
@@ -2485,7 +2485,7 @@ MagickExport ssize_t GetCommandOptionFlags(const CommandOption option,
         command_info=option_info+i;
       }
     if (command_info->mnemonic == (const char *) NULL)
-      return(-1);
+      return(UndefinedOptionFlag);
     if (negate != MagickFalse)
       option_types=option_types &~ command_info->flags;
     else