diff --git a/debian/templates/temp.image.plain/postinst b/debian/templates/temp.image.plain/postinst
index 702ce3e6c..075f700e5 100755
--- a/debian/templates/temp.image.plain/postinst
+++ b/debian/templates/temp.image.plain/postinst
@@ -629,7 +629,7 @@ sub do_modules {
     }
     (undef, undef, my $running_version) = POSIX::uname();
 
-    if (version_code($new_version) > version_code($running_version)) {
+    if (version_code($version) > version_code($running_version)) {
       my $missing = '';
       my %module_paths;
       open(DEP, "<$modules_base/$version/modules.dep") or return;