diff --git a/selfdrive/debug/check_timings.py b/selfdrive/debug/check_timings.py
index 000a73b781..8b289138d3 100755
--- a/selfdrive/debug/check_timings.py
+++ b/selfdrive/debug/check_timings.py
@@ -18,7 +18,7 @@ if __name__ == "__main__":
       for m in msgs:
         ts[s].append(m.logMonoTime / 1e6)
 
-      if len(ts[s]) == ts[s].maxlen:
+      if len(ts[s]):
         d = np.diff(ts[s])
         print(f"{s:17} {np.mean(d):.2f} {np.std(d):.2f} {np.max(d):.2f} {np.min(d):.2f}")
     time.sleep(1)