diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index fb76be58a2..504557b2fc 100755
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -651,7 +651,7 @@ def _resource_id(resource, path_seg):
 
 
 def run(hs):
-    PROFILE_SYNAPSE = True
+    PROFILE_SYNAPSE = False
     if PROFILE_SYNAPSE:
         def profile(func):
             from cProfile import Profile