diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/controller/v1/AuthorizeController.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/controller/v1/AuthorizeController.kt
index 9ca1444..77634b9 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/controller/v1/AuthorizeController.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/controller/v1/AuthorizeController.kt
@@ -5,6 +5,7 @@ import club.itstudio.itmanager.entity.enums.EmailType
 import club.itstudio.itmanager.entity.vo.request.EmailRegisterVO
 import club.itstudio.itmanager.entity.vo.request.PasswordResetVO
 import club.itstudio.itmanager.service.v1.AuthorizationService
+import club.itstudio.itmanager.utils.Const
 import jakarta.validation.Valid
 import jakarta.validation.constraints.Email
 import jakarta.validation.constraints.NotBlank
@@ -31,21 +32,21 @@ class AuthorizeController(
         logger.info("Trying to ask code")
         val ip = exchange.request.remoteAddress?.address?.hostAddress ?: "unknown"
         return service.askEmailVerifyCode(type, email, ip)
-            .map(::messageHandler)
+            .map(Const::messageHandler)
     }
 
     @PostMapping("/register")
     fun emailRegister(@RequestBody @Valid vo: EmailRegisterVO): Mono<ApiResponse<Any?>> {
         logger.info("Trying to register")
         return service.registerEmailAccount(vo)
-            .map(::messageHandler)
+            .map(Const::messageHandler)
     }
 
     @PostMapping("/reset")
     fun emailResetPassword(@RequestBody @Valid vo: PasswordResetVO): Mono<ApiResponse<Any?>> {
         logger.info("Trying to reset password")
         return service.resetEmailAccountPassword(vo)
-            .map(::messageHandler)
+            .map(Const::messageHandler)
     }
 
     @GetMapping("/logout")
@@ -68,12 +69,4 @@ class AuthorizeController(
             ?.map { ApiResponse.success(it) }
             ?: Mono.just(ApiResponse.failure(401, null, "Please login with password."))
     }
-
-    private fun messageHandler(wrongMessage: String): ApiResponse<Any?> {
-        return if (wrongMessage.isBlank()) {
-            ApiResponse.success()
-        } else {
-            ApiResponse.failure(400, null, wrongMessage)
-        }
-    }
 }
\ No newline at end of file
diff --git a/src/beckend/src/main/kotlin/club/itstudio/itmanager/utils/Const.kt b/src/beckend/src/main/kotlin/club/itstudio/itmanager/utils/Const.kt
index e461c5f..4cf60d5 100644
--- a/src/beckend/src/main/kotlin/club/itstudio/itmanager/utils/Const.kt
+++ b/src/beckend/src/main/kotlin/club/itstudio/itmanager/utils/Const.kt
@@ -1,5 +1,6 @@
 package club.itstudio.itmanager.utils
 
+import club.itstudio.itmanager.entity.ApiResponse
 import reactor.core.publisher.Mono
 
 object Const {
@@ -14,4 +15,13 @@ object Const {
 
     const val INTERNAL_ERROR_STR = "something went wrong. Please contact the administrator."
     val INTERNAL_ERROR_MONO = Mono.just(INTERNAL_ERROR_STR)
+
+    // for Controllers
+    fun messageHandler(wrongMessage: String): ApiResponse<Any?> {
+        return if (wrongMessage.isBlank()) {
+            ApiResponse.success()
+        } else {
+            ApiResponse.failure(400, null, wrongMessage)
+        }
+    }
 }
\ No newline at end of file