diff --git a/comps/cores/mega/http_service.py b/comps/cores/mega/http_service.py
index eecc3f2221..62b9cd5e32 100644
--- a/comps/cores/mega/http_service.py
+++ b/comps/cores/mega/http_service.py
@@ -36,7 +36,7 @@ def __init__(
 
         # remove part before '@', used by register_microservice() callers, and
         # part after '/', added by MicroService(), to get real service name
-        suffix = self.title.split('/')[0].split('@')[-1].lower()
+        suffix = self.title.split("/")[0].split("@")[-1].lower()
         instrumentator = Instrumentator(
             inprogress_name=f"http_requests_inprogress_{suffix}",
             should_instrument_requests_inprogress=True,