diff --git a/scripts/upgrade b/scripts/upgrade
index 8252a9b..c2ddc1d 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -39,7 +39,7 @@ filter_boring_occ_warnings() {
 # Define a function to execute commands with `occ`
 exec_occ() {
     # Backward compatibility to upgrade from older versions
-    if [ $current_major_version = "last" ]
+    if [ $current_major_version = "$last_major_version" ]
     then
         NEXTCLOUD_PHP_VERSION="8.3"
     elif [ $current_major_version -ge 26 ]