diff --git a/bin/create_user.sh b/bin/create_user.sh
index 90937b9..78ef382 100755
--- a/bin/create_user.sh
+++ b/bin/create_user.sh
@@ -319,7 +319,7 @@ while read i; do
 			fi;
 			cat "${ssh_keyfile_pub}" > ${SSH_AUTHORIZED_FILE};
 		else
-			if [ -z "${SSH_CENTRAL_AUTHORIZED_FILE_FOLDER}" ]; then
+			if [ ! -z "${SSH_CENTRAL_AUTHORIZED_FILE_FOLDER}" ]; then
 				echo "$> chattr -i ${SSH_AUTHORIZED_FILE}";
 			fi;
 			echo "$> cat ${ssh_keyfile_pub} > ${SSH_AUTHORIZED_FILE}";