diff --git a/wlauto/instrumentation/fps/__init__.py b/wlauto/instrumentation/fps/__init__.py
index 54fb353d..9cadeebd 100755
--- a/wlauto/instrumentation/fps/__init__.py
+++ b/wlauto/instrumentation/fps/__init__.py
@@ -39,10 +39,9 @@ from wlauto.instrumentation import instrument_is_installed
 from wlauto.exceptions import (InstrumentError, WorkerThreadError, ConfigError,
                                DeviceNotRespondingError, TimeoutError)
 from wlauto.utils.types import boolean, numeric
-from wlauto.utils.fps import FpsProcessor, SurfaceFlingerFrame, GfxInfoFrame, GFXINFO_EXEMPT
+from wlauto.utils.fps import (FpsProcessor, SurfaceFlingerFrame, GfxInfoFrame, GFXINFO_EXEMPT,
+                              VSYNC_INTERVAL)
 
-
-VSYNC_INTERVAL = 16666667
 PAUSE_LATENCY = 20
 EPSYLON = 0.0001
 
diff --git a/wlauto/utils/fps.py b/wlauto/utils/fps.py
index 84016622..735be824 100755
--- a/wlauto/utils/fps.py
+++ b/wlauto/utils/fps.py
@@ -29,6 +29,8 @@ GfxInfoFrame = collections.namedtuple('GfxInfoFrame', 'Flags IntendedVsync Vsync
 # Android M: WindowLayoutChanged | SurfaceCanvas
 GFXINFO_EXEMPT = 1 | 4
 
+VSYNC_INTERVAL = 16666667
+
 
 class FpsProcessor(object):
     """