diff --git a/inc/power.inc.sh b/inc/power.inc.sh
index 3a394910..b21b0518 100644
--- a/inc/power.inc.sh
+++ b/inc/power.inc.sh
@@ -791,7 +791,7 @@ CHECKPOWER_SERVICE(){
 		log_start=$(date "+%Y-%m-%d %H:%M:%S")
 		source ${PW_FOLDER}/defaults.inc
 		
-		[ "${TEST_INPUTACV}" != "" ] || [ "${TEST_BATTVOLT}" != "" ] && TESTMODE=1 || TESTMODE=0
+		([ "${TEST_INPUTACV}" != "" ] || [ "${TEST_BATTVOLT}" != "" ]) && TESTMODE=1 || TESTMODE=0
 		
 		if [[ "${IP}" != "10.6.1"* ]]; then