diff --git a/selfdrive/locationd/test/test_ublox_processing.py b/selfdrive/locationd/test/test_ublox_processing.py
index 792829d721..7aa588d43e 100755
--- a/selfdrive/locationd/test/test_ublox_processing.py
+++ b/selfdrive/locationd/test/test_ublox_processing.py
@@ -55,14 +55,14 @@ class TestUbloxProcessing(unittest.TestCase):
       processed_meas = process_measurements(measurements, dog)
       count_processed_measurements += len(processed_meas)
       pos_fix = calc_pos_fix(processed_meas)
-      if len(pos_fix) > 0 and all(pos_fix[0] != 0):
+      if len(pos_fix) > 0 and all(p != 0 for p in pos_fix[0]):
         position_fix_found += 1
 
         corrected_meas = correct_measurements(processed_meas, pos_fix[0][:3], dog)
         count_corrected_measurements += len(corrected_meas)
 
         pos_fix = calc_pos_fix(corrected_meas)
-        if len(pos_fix) > 0 and all(pos_fix[0] != 0):
+        if len(pos_fix) > 0 and all(p != 0 for p in pos_fix[0]):
           pos_ests.append(pos_fix[0])
           position_fix_found_after_correcting += 1