diff --git a/src/UI/Components/Forms/SignIn/SignInFormTrait.php b/src/UI/Components/Forms/SignIn/SignInFormTrait.php
index 4f9935b..3fe8c0d 100644
--- a/src/UI/Components/Forms/SignIn/SignInFormTrait.php
+++ b/src/UI/Components/Forms/SignIn/SignInFormTrait.php
@@ -105,6 +105,15 @@ public function validateForm(array $values, Form $form): void
 	{
 		try {
 			$this->_identity = $this->_authenticator->authenticate($values['email'], $values['password'], $this->_fancyAdmin->getContext());
+
+			if (
+				!$this->_identity->isAllowed($this->_fancyAdmin->getCustomerAclResource())
+				&&
+				!$this->_identity->isAllowed($this->_fancyAdmin->getBackofficeAclResource())
+			) {
+				$form->addError('fcadmin.appGeneral.exceptions.noPermission');
+			}
+
 		} catch (AuthenticationException) {
 			$form->addError('fcadmin.appGeneral.exceptions.wrongCredentials');
 		}
diff --git a/src/lang/fcadmin.cs.yml b/src/lang/fcadmin.cs.yml
index ed4d60b..6d2292e 100644
--- a/src/lang/fcadmin.cs.yml
+++ b/src/lang/fcadmin.cs.yml
@@ -307,6 +307,7 @@ appGeneral:
   exceptions:
     userNotFound: "Uživatel nenalezen"
     wrongCredentials: "Neplatné přihlašovací údaje"
+    noPermission: "Nemáte právo pro přihlášení"
     inactiveUser: "Neaktivní uživatel"
 
 sidePanels: