1 files changed, 8 insertions, 2 deletions
diff --git a/tfshark.c b/tfshark.c
index bad0ab3b46..b91afb6272 100644
--- a/tfshark.c
+++ b/tfshark.c
@@ -689,13 +689,18 @@ main(int argc, char *argv[])
       line_buffered = TRUE;
       break;
     case 'o':        /* Override preference from command line */
-      switch (prefs_set_pref(optarg)) {
+    {
+      char *errmsg = NULL;
+
+      switch (prefs_set_pref(optarg, &errmsg)) {
 
       case PREFS_SET_OK:
         break;
 
       case PREFS_SET_SYNTAX_ERR:
-        cmdarg_err("Invalid -o flag \"%s\"", optarg);
+        cmdarg_err("Invalid -o flag \"%s\"%s%s", optarg,
+            errmsg ? ": " : "", errmsg ? errmsg : "");
+        g_free(errmsg);
         return 1;
         break;
 
@@ -707,6 +712,7 @@ main(int argc, char *argv[])
         break;
       }
       break;
+    }
     case 'q':        /* Quiet */
       quiet = TRUE;
       break;