diff --git a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Call.json b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Call.json
index e2f22540fe..1c9d621dac 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Call.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Call.json
@@ -67,7 +67,8 @@
         },
         "account": {
             "type": "link",
-            "readOnly": true
+            "readOnly": true,
+            "customizationReadOnlyDisabled": true
         },
         "acceptanceStatus": {
             "type": "enum",
diff --git a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Meeting.json b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Meeting.json
index 5d1d6d3faa..5cacc90f75 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Meeting.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Meeting.json
@@ -70,7 +70,8 @@
         },
         "account": {
             "type": "link",
-            "readOnly": true
+            "readOnly": true,
+            "customizationReadOnlyDisabled": true
         },
         "acceptanceStatus": {
             "type": "enum",
diff --git a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Task.json b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Task.json
index ed3de79f04..279d0bfae3 100644
--- a/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Task.json
+++ b/application/Espo/Modules/Crm/Resources/metadata/entityDefs/Task.json
@@ -82,11 +82,13 @@
         },
         "account": {
             "type": "link",
-            "readOnly": true
+            "readOnly": true,
+            "customizationReadOnlyDisabled": true
         },
         "contact": {
             "type": "link",
-            "readOnly": true
+            "readOnly": true,
+            "customizationReadOnlyDisabled": true
         },
         "createdAt": {
             "type": "datetime",