diff --git a/packages/usb/log-i2c-errors.sh b/packages/usb/log-i2c-errors.sh
index 61579ab8..cd92cd0f 100755
--- a/packages/usb/log-i2c-errors.sh
+++ b/packages/usb/log-i2c-errors.sh
@@ -4,7 +4,7 @@
 startTime=`date +%s`
 while true; do
     s="$((`date +%s`-$startTime))"
-    echo "$((s/60/60)):$((s/60)):$((s))"
+    echo "$((s/60))m"
     for i in `seq 0 5`; do ./get-slave-i2c-errors.js $i; done
 done
 ) 2>&1 | tee $1