diff --git a/src/lib/ee_lib_service.sh b/src/lib/ee_lib_service.sh
index 5eb9fad0..55660ddb 100644
--- a/src/lib/ee_lib_service.sh
+++ b/src/lib/ee_lib_service.sh
@@ -7,36 +7,39 @@
 function ee_lib_service()
 {
 	for ee_service_name in ${@:1:$(($#-1))}; do
-		# Display message
-		ee_lib_echo "Executing service $ee_service_name ${@: -1}, please wait..."
+		dpkg --get-selections | grep -v deinstall | grep $ee_service_name &>> $EE_COMMAND_LOG
+		if [ $? -eq 0 ];then
+			# Display message
+			ee_lib_echo "Executing service $ee_service_name ${@: -1}, please wait..."
 
-		# Check nginx and php5-fpm test before start/stop/restart/reload 
-		if [ $ee_service_name = "nginx" ]; then
-			# Adjust nginx server_names_hash_bucket_size
-			$ee_service_name -t 2>&1 | grep server_names_hash_bucket_size &>> $EE_COMMAND_LOG
-			if [ $? -eq 0 ];then
-				EE_NGINX_CALCULATION=$(echo "l($(ls /etc/nginx/sites-enabled/ | wc -c))/l(2)+2" | bc -l)
-				EE_NGINX_SET_BUCKET=$(echo "2^$EE_NGINX_CALCULATION" | bc -l 2> /dev/null)
-				sed -i "s/.*server_names_hash_bucket_size.*/\tserver_names_hash_bucket_size $EE_NGINX_SET_BUCKET;/" /etc/nginx/nginx.conf
+			# Check nginx and php5-fpm test before start/stop/restart/reload 
+			if [ $ee_service_name = "nginx" ]; then
+				# Adjust nginx server_names_hash_bucket_size
+				$ee_service_name -t 2>&1 | grep server_names_hash_bucket_size &>> $EE_COMMAND_LOG
+				if [ $? -eq 0 ];then
+					EE_NGINX_CALCULATION=$(echo "l($(ls /etc/nginx/sites-enabled/ | wc -c))/l(2)+2" | bc -l)
+					EE_NGINX_SET_BUCKET=$(echo "2^$EE_NGINX_CALCULATION" | bc -l 2> /dev/null)
+					sed -i "s/.*server_names_hash_bucket_size.*/\tserver_names_hash_bucket_size $EE_NGINX_SET_BUCKET;/" /etc/nginx/nginx.conf
+				fi
+				# Test and start/stop/restart/reload nginx service
+				$ee_service_name -t &>> $EE_COMMAND_LOG \
+				&& service $ee_service_name ${@: -1} &>> $EE_COMMAND_LOG \
+				|| ee_lib_error "Unable to execute service $ee_service_name ${@: -1}, exit status = " $?
+			elif [ $ee_service_name = "php5-fpm" ]; then
+				# Test and start/stop/restart/reload php5-fpm service
+				$ee_service_name -t &>> $EE_COMMAND_LOG \
+				&& service $ee_service_name ${@: -1} &>> $EE_COMMAND_LOG\
+				|| ee_lib_error "Unable to execute service $ee_service_name ${@: -1}, exit status = " $?
+			elif [ $ee_service_name = "dovecot" ]; then
+				# Test and start/stop/restart/reload Dovecot service
+				$ee_service_name -n &>> $EE_COMMAND_LOG \
+				&& service $ee_service_name ${@: -1} &>> $EE_COMMAND_LOG\
+				|| ee_lib_error "Unable to execute service $ee_service_name ${@: -1}, exit status = " $?
+			else
+				# start/stop/restart/reload services
+				service $ee_service_name ${@: -1} &>> $EE_COMMAND_LOG \
+				|| ee_lib_error "Unable to execute service $ee_service_name ${@: -1}, exit status = " $?
 			fi
-			# Test and start/stop/restart/reload nginx service
-			$ee_service_name -t &>> $EE_COMMAND_LOG \
-			&& service $ee_service_name ${@: -1} &>> $EE_COMMAND_LOG \
-			|| ee_lib_error "Unable to execute service $ee_service_name ${@: -1}, exit status = " $?
-		elif [ $ee_service_name = "php5-fpm" ]; then
-			# Test and start/stop/restart/reload php5-fpm service
-			$ee_service_name -t &>> $EE_COMMAND_LOG \
-			&& service $ee_service_name ${@: -1} &>> $EE_COMMAND_LOG\
-			|| ee_lib_error "Unable to execute service $ee_service_name ${@: -1}, exit status = " $?
-		elif [ $ee_service_name = "dovecot" ]; then
-			# Test and start/stop/restart/reload Dovecot service
-			$ee_service_name -n &>> $EE_COMMAND_LOG \
-			&& service $ee_service_name ${@: -1} &>> $EE_COMMAND_LOG\
-			|| ee_lib_error "Unable to execute service $ee_service_name ${@: -1}, exit status = " $?
-		else
-			# start/stop/restart/reload services
-			service $ee_service_name ${@: -1} &>> $EE_COMMAND_LOG \
-			|| ee_lib_error "Unable to execute service $ee_service_name ${@: -1}, exit status = " $?
 		fi
 	done
 }