diff --git a/gravity-sync.sh b/gravity-sync.sh
index 6d57b2d..35f76f5 100755
--- a/gravity-sync.sh
+++ b/gravity-sync.sh
@@ -275,7 +275,7 @@ function validate_ph_folders {
 function validate_os_sshpass {
     if hash sshpass 2>/dev/null
     then
-		if [-z "$REMOTE_PASS" ]
+		if test -z "$REMOTE_PASS"
 		then
 			sshpassword=''
 		else