diff --git a/selfdrive/locationd/laikad.py b/selfdrive/locationd/laikad.py
index 8ec570e2be..6fd70875ac 100755
--- a/selfdrive/locationd/laikad.py
+++ b/selfdrive/locationd/laikad.py
@@ -201,7 +201,7 @@ def create_measurement_msg(meas: GNSSMeasurement):
 
   c.ephemerisSource.type = source_type.value
   c.ephemerisSource.gpsWeek = week
-  c.ephemerisSource.gpsTimeOfWeek = time_of_week
+  c.ephemerisSource.gpsTimeOfWeek = int(time_of_week)
   return c