diff --git a/py/vm.c b/py/vm.c
index c7fc83d048..9a27b2b220 100644
--- a/py/vm.c
+++ b/py/vm.c
@@ -1124,7 +1124,7 @@ unwind_return:
                             }
                         }
                         if (obj == MP_OBJ_NULL) {
-                            obj = mp_obj_new_exception_msg(&mp_type_RuntimeError, "No active exception to reraise");
+                            obj = mp_obj_new_exception_msg(&mp_type_RuntimeError, "no active exception to reraise");
                             RAISE(obj);
                         }
                     } else {