diff --git a/selfdrive/modeld/dmonitoringmodeld.cc b/selfdrive/modeld/dmonitoringmodeld.cc
index 0e2029795..a3ddfea04 100644
--- a/selfdrive/modeld/dmonitoringmodeld.cc
+++ b/selfdrive/modeld/dmonitoringmodeld.cc
@@ -65,7 +65,7 @@ int main(int argc, char **argv) {
       double t2 = millis_since_boot();
 
       // send dm packet
-      dmonitoring_publish(pm, extra.frame_id, res, t2-t1);
+      dmonitoring_publish(pm, extra.frame_id, res, (t2-t1)/1000.0);
 
       LOGD("dmonitoring process: %.2fms, from last %.2fms", t2-t1, t1-last);
       last = t1;