diff --git a/docopt_value.h b/docopt_value.h
index e1c87e6..2666af3 100644
--- a/docopt_value.h
+++ b/docopt_value.h
@@ -85,8 +85,8 @@ namespace docopt {
 				case Kind::Long: return "long";
 				case Kind::String: return "string";
 				case Kind::StringList: return "string-list";
+				default: return "unknown";
 			}
-			return "unknown";
 		}
 
 		void throwIfNotKind(Kind expected) const {