diff --git a/test/litest.c b/test/litest.c
index 179a8a76..c36c9f80 100644
--- a/test/litest.c
+++ b/test/litest.c
@@ -519,7 +519,7 @@ _litest_parameters_new(const char *name, ...) {
 					break;
 				}
 				default:
-					abort();
+					litest_abort_msg("Unhandled parameter type '%c'", type);
 					break;
 				}
 			}