diff --git a/lnbits/core/models/extensions.py b/lnbits/core/models/extensions.py
index 44c014b7e..c482cbd61 100644
--- a/lnbits/core/models/extensions.py
+++ b/lnbits/core/models/extensions.py
@@ -7,6 +7,7 @@ import os
 import shutil
 import zipfile
 from asyncio.tasks import create_task
+from collections.abc import Mapping
 from pathlib import Path
 from typing import Any
 
@@ -83,6 +84,14 @@ class ExtensionPermission(BaseModel):
     description: str | None = None
     policy: dict[str, Any] | None = None
 
+    @staticmethod
+    def list_from_config(config_json: Mapping[str, Any]) -> list[ExtensionPermission]:
+        return [
+            ExtensionPermission.parse_obj(permission)
+            for permission in config_json.get("permissions") or []
+            if isinstance(permission, dict) and permission.get("id")
+        ]
+
 
 class ExtensionConfig(BaseModel):
     name: str
@@ -642,11 +651,7 @@ class InstallableExtension(BaseModel):
                     version=version,
                     short_description=config_json.get("short_description"),
                     icon=config_json.get("tile"),
-                    permissions=[
-                        ExtensionPermission.parse_obj(permission)
-                        for permission in config_json.get("permissions") or []
-                        if isinstance(permission, dict) and permission.get("id")
-                    ],
+                    permissions=ExtensionPermission.list_from_config(config_json),
                     meta=ExtensionMeta(
                         installed_release=ExtensionRelease(
                             name=ext_id,
diff --git a/lnbits/core/services/extensions.py b/lnbits/core/services/extensions.py
index d327b2aca..86c904f4d 100644
--- a/lnbits/core/services/extensions.py
+++ b/lnbits/core/services/extensions.py
@@ -121,11 +121,7 @@ def _validate_extension_permissions(
 
     requested_permissions = validate_extension_permissions(
         ext_info.id,
-        [
-            ExtensionPermission.parse_obj(permission)
-            for permission in extension_config.get("permissions") or []
-            if isinstance(permission, dict) and permission.get("id")
-        ],
+        ExtensionPermission.list_from_config(extension_config),
     )
     if not requested_permissions:
         return []