diff --git a/tests/upgrade_postinstall_desktop.pm b/tests/upgrade_postinstall_desktop.pm
index 0cf6d737..50804527 100644
--- a/tests/upgrade_postinstall_desktop.pm
+++ b/tests/upgrade_postinstall_desktop.pm
@@ -19,7 +19,7 @@ sub run {
     assert_screen "graphical_desktop_clean", 30;
     # check an upgrade actually happened (and we can log into a console)
     $self->root_console(tty=>3);
-    $self->check_release(get_var('VERSION'));
+    $self->check_release(lc(get_var('VERSION')));
 }
 
 
diff --git a/tests/upgrade_postinstall_minimal.pm b/tests/upgrade_postinstall_minimal.pm
index 9f59761e..fec3f415 100644
--- a/tests/upgrade_postinstall_minimal.pm
+++ b/tests/upgrade_postinstall_minimal.pm
@@ -9,7 +9,7 @@ sub run {
     # try to login, check whether target release is installed
     $self->boot_to_login_screen();
     $self->root_console(tty=>3);
-    $self->check_release(get_var('VERSION'));
+    $self->check_release(lc(get_var('VERSION')));
 }