diff --git a/application/Espo/Core/FieldProcessing/Reminders/Loader.php b/application/Espo/Core/FieldProcessing/Reminder/Loader.php
similarity index 95%
rename from application/Espo/Core/FieldProcessing/Reminders/Loader.php
rename to application/Espo/Core/FieldProcessing/Reminder/Loader.php
index 86c8c856bf..43a197e148 100644
--- a/application/Espo/Core/FieldProcessing/Reminders/Loader.php
+++ b/application/Espo/Core/FieldProcessing/Reminder/Loader.php
@@ -27,7 +27,7 @@
  * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
  ************************************************************************/
 
-namespace Espo\Core\FieldProcessing\Reminders;
+namespace Espo\Core\FieldProcessing\Reminder;
 
 use Espo\Core\{
     ORM\Entity,
@@ -36,6 +36,9 @@ use Espo\Core\{
     FieldProcessing\LoaderParams,
 };
 
+/**
+ * @internal This class should not be removed as it's used by custom entities.
+ */
 class Loader implements LoaderInterface
 {
     private $entityManager;
diff --git a/application/Espo/Core/Templates/Metadata/Event/recordDefs.json b/application/Espo/Core/Templates/Metadata/Event/recordDefs.json
index 8db836c14e..5ac5dbf19f 100644
--- a/application/Espo/Core/Templates/Metadata/Event/recordDefs.json
+++ b/application/Espo/Core/Templates/Metadata/Event/recordDefs.json
@@ -1,5 +1,5 @@
 {
     "readLoaderClassNameList": [
-        "Espo\\Core\\FieldProcessing\\Reminders\\Loader"
+        "Espo\\Core\\FieldProcessing\\Reminder\\Loader"
     ]
 }
diff --git a/application/Espo/Modules/Crm/Resources/metadata/recordDefs/Call.json b/application/Espo/Modules/Crm/Resources/metadata/recordDefs/Call.json
index 8db836c14e..5ac5dbf19f 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/recordDefs/Call.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/recordDefs/Call.json
@@ -1,5 +1,5 @@
 {
     "readLoaderClassNameList": [
-        "Espo\\Core\\FieldProcessing\\Reminders\\Loader"
+        "Espo\\Core\\FieldProcessing\\Reminder\\Loader"
     ]
 }
diff --git a/application/Espo/Modules/Crm/Resources/metadata/recordDefs/Meeting.json b/application/Espo/Modules/Crm/Resources/metadata/recordDefs/Meeting.json
index 8db836c14e..5ac5dbf19f 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/recordDefs/Meeting.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/recordDefs/Meeting.json
@@ -1,5 +1,5 @@
 {
     "readLoaderClassNameList": [
-        "Espo\\Core\\FieldProcessing\\Reminders\\Loader"
+        "Espo\\Core\\FieldProcessing\\Reminder\\Loader"
     ]
 }
diff --git a/application/Espo/Modules/Crm/Resources/metadata/recordDefs/Task.json b/application/Espo/Modules/Crm/Resources/metadata/recordDefs/Task.json
index 8db836c14e..5ac5dbf19f 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/recordDefs/Task.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/recordDefs/Task.json
@@ -1,5 +1,5 @@
 {
     "readLoaderClassNameList": [
-        "Espo\\Core\\FieldProcessing\\Reminders\\Loader"
+        "Espo\\Core\\FieldProcessing\\Reminder\\Loader"
     ]
 }