diff --git a/extra/my_print_defaults.c b/extra/my_print_defaults.c
index d5836cb0dc8..c0461fd0368 100644
--- a/extra/my_print_defaults.c
+++ b/extra/my_print_defaults.c
@@ -27,12 +27,20 @@
 
 const char *config_file="my";			/* Default config file */
 uint verbose= 0, opt_defaults_file_used= 0;
+const char *default_dbug_option="d:t:o,/tmp/my_print_defaults.trace";
 
 static struct my_option my_long_options[] =
 {
   {"config-file", 'c', "The config file to be used.",
    (gptr*) &config_file, (gptr*) &config_file, 0, GET_STR, REQUIRED_ARG,
    0, 0, 0, 0, 0, 0},
+#ifdef DBUG_OFF
+  {"debug", '#', "This is a non-debug version. Catch this and exit",
+   0,0, 0, GET_DISABLED, OPT_ARG, 0, 0, 0, 0, 0, 0},
+#else
+  {"debug", '#', "Output debug log", (gptr*) &default_dbug_option,
+   (gptr*) &default_dbug_option, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
+#endif
   {"defaults-file", 'c', "Synonym for --config-file.",
    (gptr*) &config_file, (gptr*) &config_file, 0, GET_STR, REQUIRED_ARG,
    0, 0, 0, 0, 0, 0},
@@ -95,6 +103,9 @@ get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
     case 'V':
     usage(1);
     exit(0);
+    case '#':
+      DBUG_PUSH(argument ? argument : default_dbug_option);
+      break;
   }
   return 0;
 }
@@ -118,7 +129,7 @@ static int get_options(int *argc,char ***argv)
 int main(int argc, char **argv)
 {
   int count, error;
-  char **load_default_groups, *tmp_arguments[2],
+  char **load_default_groups, *tmp_arguments[3],
        **argument, **arguments;
   char *defaults, *extra_defaults;
   MY_INIT(argv[0]);
diff --git a/mysys/default.c b/mysys/default.c
index bf23502389d..9510cfb3464 100644
--- a/mysys/default.c
+++ b/mysys/default.c
@@ -144,7 +144,7 @@ int load_defaults(const char *conf_file, const char **groups,
                   int *argc, char ***argv)
 {
   DYNAMIC_ARRAY args;
-  const char **dirs, *forced_default_file;
+  const char **dirs, *forced_default_file, *forced_extra_defaults;
   TYPELIB group;
   my_bool found_print_defaults=0;
   uint args_used=0;
@@ -174,13 +174,14 @@ int load_defaults(const char *conf_file, const char **groups,
   }
 
   get_defaults_files(*argc, *argv,
-                      (char **)&forced_default_file, &defaults_extra_file);
+                      (char **)&forced_default_file,
+                      (char **)&forced_extra_defaults);
   if (forced_default_file)
     forced_default_file= strchr(forced_default_file,'=')+1;
-  if (defaults_extra_file)
-    defaults_extra_file= strchr(defaults_extra_file,'=')+1;
+  if (forced_extra_defaults)
+    defaults_extra_file= strchr(forced_extra_defaults,'=')+1;
 
-  args_used+= (forced_default_file ? 1 : 0) + (defaults_extra_file ? 1 : 0);
+  args_used+= (forced_default_file ? 1 : 0) + (forced_extra_defaults ? 1 : 0);
 
   group.count=0;
   group.name= "defaults";