diff --git a/inc/temp.inc.sh b/inc/temp.inc.sh
index c1183f79..9200a7d3 100644
--- a/inc/temp.inc.sh
+++ b/inc/temp.inc.sh
@@ -615,7 +615,7 @@ SERVERROOM_TEMP_DIFFERENCE(){
 
 	last_tempdiff=$(tail -n 1 ${PW_TMPFOLDER}/.log.sr.difference)
 	last_tempdiff=${last_tempdiff#*~}
-	[ ${last_tempdiff} -lt 1 ] && last_tempdiff="0${last_tempdiff}"
+	[ $(bc -l <<< "${last_tempdiff} < 1") -eq 1 ] && last_tempdiff="0${last_tempdiff}"
 	tempdiffs=$(tail -n ${LAST} ${PW_TMPFOLDER}/.log.sr.difference)
 	largest_tempdiff=0
 	IFS=$'\n'