diff --git a/entrypoint.sh b/entrypoint.sh
index ce88b79..144ec9e 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -63,7 +63,7 @@ printf "%s" "put -r $5 $6" >$TEMP_SFTP_FILE
 #-o StrictHostKeyChecking=no avoid Host key verification failed.
 sftp -b $TEMP_SFTP_FILE -P $3 $8 -o StrictHostKeyChecking=no -i $TEMP_SSH_PRIVATE_KEY_FILE $1@$2
 
-if [ -z != ${11} ]; then
+if [ -n "$11" ]; then
 	echo $11
 	echo "------"
 	ssh -o StrictHostKeyChecking=no -p $3 -i $TEMP_SSH_PRIVATE_KEY_FILE $1@$2 "$11"