diff --git a/src/services/blocks/block_types/quizBlock/quizBlock.py b/src/services/blocks/block_types/quizBlock/quizBlock.py
index d7c57ac3..f8758516 100644
--- a/src/services/blocks/block_types/quizBlock/quizBlock.py
+++ b/src/services/blocks/block_types/quizBlock/quizBlock.py
@@ -31,7 +31,7 @@ class quizBlock(BaseModel):
 async def create_quiz_block(request: Request, quizBlock: quizBlock, activity_id: str, user: PublicUser):
     blocks = request.app.db["blocks"]
     activities = request.app.db["activities"]
-    courses = request.app.db["courses"]
+    request.app.db["courses"]
 
     # Get org_id from activity
     activity = await activities.find_one({"activity_id": activity_id}, {"_id": 0, "org_id": 1})
diff --git a/src/services/blocks/utils/upload_files.py b/src/services/blocks/utils/upload_files.py
index e014f8bc..a3ae2096 100644
--- a/src/services/blocks/utils/upload_files.py
+++ b/src/services/blocks/utils/upload_files.py
@@ -1,4 +1,3 @@
-import os
 import uuid
 from fastapi import HTTPException, Request, UploadFile, status
 from src.services.blocks.schemas.files import BlockFile
diff --git a/src/services/courses/activities/activities.py b/src/services/courses/activities/activities.py
index c783cc55..0a1c704c 100644
--- a/src/services/courses/activities/activities.py
+++ b/src/services/courses/activities/activities.py
@@ -1,4 +1,3 @@
-from calendar import c
 from pydantic import BaseModel
 from src.security.security import verify_user_rights_with_roles
 from src.services.users.schemas.users import PublicUser
diff --git a/src/services/courses/activities/uploads/pdfs.py b/src/services/courses/activities/uploads/pdfs.py
index 40a0da51..fb4447b8 100644
--- a/src/services/courses/activities/uploads/pdfs.py
+++ b/src/services/courses/activities/uploads/pdfs.py
@@ -1,4 +1,3 @@
-import os
 
 from src.services.utils.upload_content import upload_content
 
diff --git a/src/services/courses/activities/uploads/videos.py b/src/services/courses/activities/uploads/videos.py
index c68055cf..d2aae465 100644
--- a/src/services/courses/activities/uploads/videos.py
+++ b/src/services/courses/activities/uploads/videos.py
@@ -1,4 +1,3 @@
-import os
 
 from src.services.utils.upload_content import upload_content
 
diff --git a/src/services/courses/courses.py b/src/services/courses/courses.py
index ade2c2ed..8088c41b 100644
--- a/src/services/courses/courses.py
+++ b/src/services/courses/courses.py
@@ -1,4 +1,3 @@
-from calendar import c
 import json
 from typing import List, Optional
 from uuid import uuid4
diff --git a/src/services/courses/thumbnails.py b/src/services/courses/thumbnails.py
index 80d4a677..46b59172 100644
--- a/src/services/courses/thumbnails.py
+++ b/src/services/courses/thumbnails.py
@@ -1,4 +1,3 @@
-import os
 
 from src.services.utils.upload_content import upload_content
 
diff --git a/src/services/orgs/logos.py b/src/services/orgs/logos.py
index 2a61cbfb..46108cf9 100644
--- a/src/services/orgs/logos.py
+++ b/src/services/orgs/logos.py
@@ -1,6 +1,4 @@
-import os
 from uuid import uuid4
-from fastapi import HTTPException, status
 
 from src.services.utils.upload_content import upload_content