diff --git a/powerwall.sh b/powerwall.sh
index f994e368..d8b26aa1 100755
--- a/powerwall.sh
+++ b/powerwall.sh
@@ -515,8 +515,8 @@ CHECKPOWER(){
 	SVRRM_AMP=$(snmpwalk -v 1 -c public 10.10.1.205 iso.3.6.1.2.1.33.1.4.4.1.3.1 | sed 's/.*: //')
 	SVRRM_AMP=`echo "scale=1; ${SVRRM_AMP}/10" | bc`
 	
-	NETRK_AMP=`echo "scale=1; ${SVRRM_AMP}-${APCPDU_AMP}" | bc`
-	NETRK_WATT=`echo "scale=0; ${SVRRM_WATT}-${APCPDU_WATT}" | bc`
+	NETRK_AMP=`echo "scale=1; ${SVRRM_AMP} - ${APCPDU_AMP}" | bc`
+	NETRK_WATT=`echo "scale=0; ${SVRRM_WATT} - ${APCPDU_WATT}" | bc`
 	
 	echo
 	echo -e "${idsCL[Yellow]}Power Information"