diff --git a/backend/internal/handler/auth_handler_signup_test.go b/backend/internal/handler/auth_handler_signup_test.go
index bbd3367a..c7de8253 100644
--- a/backend/internal/handler/auth_handler_signup_test.go
+++ b/backend/internal/handler/auth_handler_signup_test.go
@@ -119,7 +119,7 @@ func TestSignup_CompanyCodeValidation(t *testing.T) {
 		assert.Equal(t, http.StatusBadRequest, resp.StatusCode)
 		var res map[string]interface{}
 		json.NewDecoder(resp.Body).Decode(&res)
-		assert.Equal(t, "Invalid company code.", res["error"])
+		assert.Equal(t, "해당하는 가족사(테넌트)를 찾을 수 없습니다.", res["error"])
 	})
 
 	t.Run("Active Company Code", func(t *testing.T) {