1 files changed, 2 insertions, 0 deletions
diff --git a/pretty.c b/pretty.c
index b5cf3d52c3..8d201f6bda 100644
--- a/pretty.c
+++ b/pretty.c
@@ -1248,6 +1248,8 @@ static size_t format_commit_one(struct strbuf *sb, /* in UTF-8 */
 			if (c->signature_check.key)
 				strbuf_addstr(sb, c->signature_check.key);
 			break;
+		default:
+			return 0;
 		}
 		return 2;
 	}