diff --git a/zerver/lib/upload/base.py b/zerver/lib/upload/base.py
index 9d4eb77596..d7b9d565c4 100644
--- a/zerver/lib/upload/base.py
+++ b/zerver/lib/upload/base.py
@@ -1,4 +1,5 @@
 import io
+import os
 import re
 import unicodedata
 from typing import IO, Any, Callable, Optional, Tuple
@@ -257,7 +258,7 @@ class ZulipUploadBackend:
         raise NotImplementedError()
 
     def realm_avatar_and_logo_path(self, realm: Realm) -> str:
-        raise NotImplementedError()
+        return os.path.join(str(realm.id), "realm")
 
 
 def create_attachment(
diff --git a/zerver/lib/upload/local.py b/zerver/lib/upload/local.py
index 0d2394e309..3ecbe85e11 100644
--- a/zerver/lib/upload/local.py
+++ b/zerver/lib/upload/local.py
@@ -175,9 +175,6 @@ class LocalUploadBackend(ZulipUploadBackend):
         image_data = read_local_file("avatars", source_file_path + ".original")
         self.write_avatar_images(target_file_path, image_data)
 
-    def realm_avatar_and_logo_path(self, realm: Realm) -> str:
-        return os.path.join(str(realm.id), "realm")
-
     def upload_realm_icon_image(self, icon_file: IO[bytes], user_profile: UserProfile) -> None:
         upload_path = self.realm_avatar_and_logo_path(user_profile.realm)
         image_data = icon_file.read()
diff --git a/zerver/lib/upload/s3.py b/zerver/lib/upload/s3.py
index 0070367002..f95b483bcb 100644
--- a/zerver/lib/upload/s3.py
+++ b/zerver/lib/upload/s3.py
@@ -312,9 +312,6 @@ class S3UploadBackend(ZulipUploadBackend):
         # export_path has a leading /
         return self.get_public_upload_url(export_path[1:])
 
-    def realm_avatar_and_logo_path(self, realm: Realm) -> str:
-        return os.path.join(str(realm.id), "realm")
-
     def upload_realm_icon_image(self, icon_file: IO[bytes], user_profile: UserProfile) -> None:
         content_type = guess_type(icon_file.name)[0]
         s3_file_name = os.path.join(self.realm_avatar_and_logo_path(user_profile.realm), "icon")