diff --git a/jerry-core/ecma/operations/ecma-lex-env.c b/jerry-core/ecma/operations/ecma-lex-env.c
index 9fef39f9e..b7ed28f17 100644
--- a/jerry-core/ecma/operations/ecma-lex-env.c
+++ b/jerry-core/ecma/operations/ecma-lex-env.c
@@ -216,8 +216,6 @@ ecma_op_set_mutable_binding (ecma_object_t *lex_env_p, /**< lexical environment
     }
     ecma_deref_ecma_string (arguments_magic_string_p);
 
-    JERRY_ASSERT (!is_equal);
-
     if (is_equal)
     {
       return ecma_make_throw_obj_completion_value (ecma_builtin_get (ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR));