diff --git a/Tools/pybench/pybench.py b/Tools/pybench/pybench.py
index 83a62173c64..9dee73194a7 100755
--- a/Tools/pybench/pybench.py
+++ b/Tools/pybench/pybench.py
@@ -230,7 +230,7 @@ def __init__(self, warp=None, calibration_runs=None, timer=None):
                 raise ValueError('at least one calibration run is required')
             self.calibration_runs = calibration_runs
         if timer is not None:
-            timer = timer
+            self.timer = timer
 
         # Init variables
         self.times = []