diff --git a/pic16bit/main.c b/pic16bit/main.c
index fcc51b6617a929050643009ed94f281472194a40..5c58d5c68b478878f84791875a979332893a5690 100644
--- a/pic16bit/main.c
+++ b/pic16bit/main.c
@@ -111,6 +111,7 @@ mp_obj_t mp_builtin_open(uint n_args, const mp_obj_t *args, mp_map_t *kwargs) {
 MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
 
 void nlr_jump_fail(void *val) {
+    while (1);
 }
 
 void NORETURN __fatal_error(const char *msg) {