diff --git a/system/qcomgpsd/qcomgpsd.py b/system/qcomgpsd/qcomgpsd.py
index 4e38b56..f0351b9 100755
--- a/system/qcomgpsd/qcomgpsd.py
+++ b/system/qcomgpsd/qcomgpsd.py
@@ -223,6 +223,10 @@ def wait_for_modem():
 
 
 def main() -> NoReturn:
+  global last_reported_time
+  global last_reported_latitude
+  global last_reported_longitude
+
   unpack_gps_meas, size_gps_meas = dict_unpacker(gps_measurement_report, True)
   unpack_gps_meas_sv, size_gps_meas_sv = dict_unpacker(gps_measurement_report_sv, True)