diff --git a/core/my_basic.c b/core/my_basic.c
index 8dfe0a5..262b17d 100755
--- a/core/my_basic.c
+++ b/core/my_basic.c
@@ -2887,6 +2887,8 @@ _routine:
 												_handle_error_on_obj(s, SE_RN_CANNOT_FIND_WITH_GIVEN_INDEX, 0, TON(l), MB_FUNC_ERR, _exit, result);
 											}
 
+											break;
+										default: /* Do nothing */
 											break;
 										}
 
@@ -10121,6 +10123,8 @@ int _core_let(mb_interpreter_t* s, void** l) {
 				mb_make_nil(key);
 				mb_check(mb_pop_value(s, l, &key));
 
+				break;
+			default: /* Do nothing */
 				break;
 			}
 
@@ -10153,6 +10157,8 @@ int _core_let(mb_interpreter_t* s, void** l) {
 				case _DT_DICT:
 					_set_dict(var->data->data.dict, &key, 0, 0, val);
 
+					break;
+				default: /* Do nothing */
 					break;
 				}
 
diff --git a/output/my_basic_mac b/output/my_basic_mac
index f1c56c4..14d798c 100755
Binary files a/output/my_basic_mac and b/output/my_basic_mac differ