diff --git a/backend/main.py b/backend/main.py
index e820ce528..df79a3106 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -409,7 +409,7 @@ app.mount("/static", StaticFiles(directory=STATIC_DIR), name="static")
 app.mount("/cache", StaticFiles(directory=CACHE_DIR), name="cache")
 
 if os.path.exists(FRONTEND_BUILD_DIR):
-    mimetypes.add_type('text/javascript', '.js')
+    mimetypes.add_type("text/javascript", ".js")
     app.mount(
         "/",
         SPAStaticFiles(directory=FRONTEND_BUILD_DIR, html=True),