diff --git a/lib/MirrorCache/WebAPI/Controller/Admin/Folder.pm b/lib/MirrorCache/WebAPI/Controller/Admin/Folder.pm
index c5948d3d..338720d6 100644
--- a/lib/MirrorCache/WebAPI/Controller/Admin/Folder.pm
+++ b/lib/MirrorCache/WebAPI/Controller/Admin/Folder.pm
@@ -28,7 +28,7 @@ sub delete_cascade {
         sub {
             my ($self, $err, @result) = @_;
             return $c->render(text => $err, status => 500) if $err;
-            return $c->render(json => {text => 'ok'});
+            return $c->render(text => 'Ok');
             my $txkeep = $tx;
         }
     );
diff --git a/t/environ/08-folder-delete-remote.sh b/t/environ/08-folder-delete-remote.sh
index fe0011b1..24b2419b 100755
--- a/t/environ/08-folder-delete-remote.sh
+++ b/t/environ/08-folder-delete-remote.sh
@@ -35,16 +35,16 @@ $mc/db/sql "select * from file"
 test 2 == $($mc/db/sql "select count(*) from folder_diff")
 test 1 == $($mc/db/sql "select count(*) from folder_diff_file")
 
-$mc/curl --interface 127.0.0.2 -X DELETE -I /admin/folder_diff/1
+$mc/curl --interface 127.0.0.2 -X DELETE -i /admin/folder_diff/1
 
 # check nothing was actually deleted
 test 2 == $($mc/db/sql "select count(*) from folder_diff")
 
-$mc/curl --interface 127.0.0.2 -X DELETE -I -H 'x-forwarded-for: 127.0.0.1' /admin/folder_diff/1
-$mc/curl --interface 127.0.0.2 -X DELETE -I -H 'x-forwarded-for: 127.0.0.1' /admin/folder_diff/1
+$mc/curl --interface 127.0.0.2 -X DELETE -i -H 'x-forwarded-for: 127.0.0.1' /admin/folder_diff/1
+$mc/curl --interface 127.0.0.2 -X DELETE -i -H 'x-forwarded-for: 127.0.0.1' /admin/folder_diff/1
 
 test 2 == $($mc/db/sql "select count(*) from folder_diff")
 
 # with 127.0.0.3 it actually works
-$mc/curl --interface 127.0.0.3 -X DELETE -I /admin/folder_diff/1
+$mc/curl --interface 127.0.0.3 -X DELETE -i /admin/folder_diff/1
 test 0 == $($mc/db/sql "select count(*) from folder_diff")
diff --git a/t/environ/08-folder-delete.sh b/t/environ/08-folder-delete.sh
index 4700663c..2abd739f 100755
--- a/t/environ/08-folder-delete.sh
+++ b/t/environ/08-folder-delete.sh
@@ -35,13 +35,13 @@ $mc/db/sql "select * from file"
 test 2 == $($mc/db/sql "select count(*) from folder_diff")
 test 1 == $($mc/db/sql "select count(*) from folder_diff_file")
 
-$mc/curl -X DELETE -I /admin/folder_diff/1
+$mc/curl -X DELETE -i /admin/folder_diff/1
 
 test 1 == $($mc/db/sql "select count(*) from folder")
 test 0 == $($mc/db/sql "select count(*) from folder_diff")
 test 0 == $($mc/db/sql "select count(*) from folder_diff_file")
 
-$mc/curl -X DELETE -I /admin/folder/1
+$mc/curl -X DELETE -i /admin/folder/1
 
 test 0 == $($mc/db/sql "select count(*) from file")
 test 0 == $($mc/db/sql "select count(*) from folder")
diff --git a/t/lib/Dockerfile.systemd.mariadb b/t/lib/Dockerfile.systemd.mariadb
index e8996742..281fb4a4 100644
--- a/t/lib/Dockerfile.systemd.mariadb
+++ b/t/lib/Dockerfile.systemd.mariadb
@@ -1,4 +1,4 @@
-FROM registry.opensuse.org/opensuse/leap:15.6
+FROM opensuse/leap:15.6
 ENV container podman
 
 ENV LANG en_US.UTF-8
diff --git a/t/lib/Dockerfile.systemd.postgresql b/t/lib/Dockerfile.systemd.postgresql
index c0ff4156..73a5df48 100644
--- a/t/lib/Dockerfile.systemd.postgresql
+++ b/t/lib/Dockerfile.systemd.postgresql
@@ -1,4 +1,4 @@
-FROM registry.opensuse.org/opensuse/leap:15.6
+FROM opensuse/leap:15.6
 ENV container podman
 
 ENV LANG en_US.UTF-8