1 files changed, 3 insertions, 2 deletions

diff --git a/lib-src/etags.c b/lib-src/etags.c
index 5d0389f911f..d0ba72be5e6 100644
--- a/lib-src/etags.c
+++ b/lib-src/etags.c
@@ -575,7 +575,7 @@ main (argc, argv)
   for (;;)
     {
       int opt;
-      opt = getopt_long (argc, argv, "aCdDo:StTi:BFuvxwVH", longopts, 0);
+      opt = getopt_long (argc, argv, "aCdDo:f:StTi:BFuvxwVH", longopts, 0);
 
       if (opt == EOF)
         break;
@@ -600,11 +600,12 @@ main (argc, argv)
         case 'D':
           constantypedefs = 0;
           break;
+        case 'f':
         case 'o':
           if (outfile)
             {
               fprintf (stderr,
-                       "%s: -o flag may only be given once\n", progname);
+                       "%s: -%c flag may only be given once\n", progname, opt);
               goto usage;
             }
           outfile = optarg;