diff --git a/powerwall.sh b/powerwall.sh
index f610c8f1..a75094f4 100755
--- a/powerwall.sh
+++ b/powerwall.sh
@@ -26,9 +26,9 @@ CHECKTEMP(){
 		echo ${TEMP_THRESHOLDS[${1}]} | cut -d',' -f 2 | read temp_crit
 		temp_f=72.2
 		
-		if [ $temp_f -ge ${temp_warn} ] && [ $temp_f -lt ${temp_crit} ]; then
+		if [ $(bc -l <<< "$temp_f >= $temp_warn") -eq 1 ] && [ $(bc -l <<< "$temp_f < $temp_crit") -eq 1 ]; then
 			echo "WARNING: $temp_f"
-		elif [ $temp_f -ge ${temp_crit} ]; then
+		elif [ $(bc -l <<< "$temp_f >= $temp_crit") -eq 1 ]; then
 			echo "CRITICAL: $temp_f"
 		else
 			echo "normal: $temp_f"