--- a/plugins/uptime
+++ b/plugins/uptime
@@ -7,5 +7,5 @@
   echo "uptime.cdef uptime,86400,/"
 }
 fetch_uptime() {
-  echo "uptime.value" $(cut -d\  -f1 /proc/uptime)
+  awk '{printf "uptime.value %.2f",$1/86400; print ""}' /proc/uptime
 }