1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/profile.py b/Lib/profile.py
index fa3527f..c1001f9 100755
--- a/Lib/profile.py
+++ b/Lib/profile.py
@@ -150,7 +150,7 @@ class Profile:
             bias = self.bias
         self.bias = bias     # Materialize in local dict for lookup speed.
 
-        if not timer:
+        if timer is None:
             if os.name == 'mac':
                 self.timer = MacOS.GetTicks
                 self.dispatcher = self.trace_dispatch_mac