diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index b83f840251..93d0700891 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -959,7 +959,7 @@ enum diff_cmd {
 	DIFF_FILES
 };
 
-static char* verify_submodule_committish(const char *sm_path,
+static char *verify_submodule_committish(const char *sm_path,
 					 const char *committish)
 {
 	struct child_process cp_rev_parse = CHILD_PROCESS_INIT;
@@ -979,7 +979,7 @@ static char* verify_submodule_committish(const char *sm_path,
 	return strbuf_detach(&result, NULL);
 }
 
-static void print_submodule_summary(struct summary_cb *info, char* errmsg,
+static void print_submodule_summary(struct summary_cb *info, char *errmsg,
 				    int total_commits, const char *displaypath,
 				    const char *src_abbrev, const char *dst_abbrev,
 				    struct module_cb *p)
@@ -1056,7 +1056,7 @@ static void generate_submodule_summary(struct summary_cb *info,
 		} else {
 			/* for a submodule removal (mode:0000000), don't warn */
 			if (p->mod_dst)
-				warning(_("unexpected mode %d\n"), p->mod_dst);
+				warning(_("unexpected mode %o\n"), p->mod_dst);
 		}
 	}