diff --git a/inc/services.inc b/inc/services.inc
index e7ab0018..85e8d521 100755
--- a/inc/services.inc
+++ b/inc/services.inc
@@ -271,7 +271,7 @@ SERVICE(){
 			echo
 		fi
 		
-		if [ "${NTS}" == "" ]; then
+		if [[ "$(declare -p NTS)" =~ "declare -a" ]]; then
 			for NTYPE in "${NTS[@]}"; do
 				var1=${NTYPE}_SERVICES_CHECK[@]
 				# if [[ "${!var1}" = *"${1}"* ]]; then