diff --git a/firmware/src/cron.c b/firmware/src/cron.c
index 4276a7b..9ad33c2 100644
--- a/firmware/src/cron.c
+++ b/firmware/src/cron.c
@@ -134,6 +134,8 @@ void read_gps_time(void)
 
     /* TODO calculate epoch time here */
 
+    /* Zero out ticks as we have just set the correct time */
+    ticks = 0;
   }
 }