diff --git a/powerwall.sh b/powerwall.sh
index a9ce0b4e..44969e5a 100755
--- a/powerwall.sh
+++ b/powerwall.sh
@@ -127,7 +127,8 @@ CHECKTEMPSENSOR(){
 		c=0; spc=''; spc1=`expr 10 - ${#tmp} - 2`; until [ $c = ${spc1} ]; do spc="${spc} "; c=`expr $c + 1`; done
 		[ ${#temp_warn} == 2 ] && spcw='  ' || spcw=' '
 		[ ${#temp_crit} == 2 ] && spcc='  ' || spcc=' '
-		# echo -e "${spc}[${spcw}${idsCL[Green]}<=$(expr ${temp_warn} - 1)'F${idsCL[Default]} /${spcw}${idsCL[Yellow]}${temp_warn}'F${idsCL[Default]} /${spcc}${idsCL[Red]}${temp_crit}'F=>${idsCL[Default]} ]"
+		tt=$(bc <<< "scale=2; ${temp_warn} - 1")
+		echo -e "${spc}[${spcw}${idsCL[Green]}<=${tt}'F${idsCL[Default]} /${spcw}${idsCL[Yellow]}${temp_warn}'F${idsCL[Default]} /${spcc}${idsCL[Red]}${temp_crit}'F=>${idsCL[Default]} ]"
 	fi
 }
 AVERAGETEMP(){