diff --git a/src/test/MigrationTest/QemuMigrateMock.pm b/src/test/MigrationTest/QemuMigrateMock.pm
index c715a60..3a48381 100644
--- a/src/test/MigrationTest/QemuMigrateMock.pm
+++ b/src/test/MigrationTest/QemuMigrateMock.pm
@@ -21,7 +21,6 @@ my $QM_LIB_PATH = $ENV{QM_LIB_PATH} or die "no QM_LIB_PATH set\n";
 
 my $source_volids = decode_json(file_get_contents("${RUN_DIR_PATH}/source_volids"));
 my $source_vdisks = decode_json(file_get_contents("${RUN_DIR_PATH}/source_vdisks"));
-my $source_other_volumes = decode_json(file_get_contents("${RUN_DIR_PATH}/source_other_volumes"));
 my $vm_status = decode_json(file_get_contents("${RUN_DIR_PATH}/vm_status"));
 my $expected_calls = decode_json(file_get_contents("${RUN_DIR_PATH}/expected_calls"));
 my $fail_config = decode_json(file_get_contents("${RUN_DIR_PATH}/fail_config"));
@@ -305,11 +304,11 @@ $MigrationTest::Shared::storage_module->mock(
         my ($scfg, $volid) = @_;
         my ($storeid, $volname) = PVE::Storage::parse_volume_id($volid);
 
-        for my $v ($source_vdisks->{$storeid}->@*, $source_other_volumes->{$storeid}->@*) {
+        for my $v ($source_vdisks->{$storeid}->@*) {
             return wantarray ? ($v->{size}, $v->{format}, $v->{used}, $v->{parent}) : $v->{size}
                 if $v->{volid} eq $volid;
         }
-        die "could not find '$volid' in mock 'source_vdisks' or 'source_other_volumes'\n";
+        die "could not find '$volid' in mock 'source_vdisks'\n";
     },
 );
 
diff --git a/src/test/run_qemu_migrate_tests.pl b/src/test/run_qemu_migrate_tests.pl
index 37d5269..05eed1d 100644
--- a/src/test/run_qemu_migrate_tests.pl
+++ b/src/test/run_qemu_migrate_tests.pl
@@ -37,7 +37,6 @@ my $storage_config = {
         local => {
             content => {
                 images => 1,
-                iso => 1,
             },
             path => "/var/lib/vz",
             type => "dir",
@@ -437,21 +436,6 @@ my $source_vdisks = {
     ],
 };
 
-# non-image volumes on the source, e.g. ISO images, in the same format as $source_vdisks. They
-# are only used for the mocked volume_size_info(), because vdisk_list() only returns images.
-my $source_other_volumes = {
-    'local' => [
-        {
-            'ctime' => 1589439681,
-            'format' => 'iso',
-            'parent' => undef,
-            'size' => 663748608,
-            'used' => 663748608,
-            'volid' => 'local:iso/debian.iso',
-        },
-    ],
-};
-
 my $default_expected_calls_online = {
     move_config_to_node => 1,
     ssh_qm_start => 1,
@@ -1252,41 +1236,6 @@ my $tests = [
             },
         },
     },
-    {
-        name => '105_local_iso_in_snapshot',
-        target => 'pve1',
-        vmid => 105,
-        vm_status => {
-            running => 0,
-        },
-        config_patch => {
-            snapshots => {
-                ohsnap => {
-                    ide2 => 'local:iso/debian.iso,media=cdrom',
-                },
-            },
-        },
-        expected_calls => {},
-        expect_die => "can't migrate local disk 'local:iso/debian.iso': local cdrom image"
-            . " (referenced in snapshot - ohsnap)",
-        expected => {
-            source_volids => local_volids_for_vm(105),
-            target_volids => {},
-            vm_config => get_patched_config(
-                105,
-                {
-                    snapshots => {
-                        ohsnap => {
-                            ide2 => 'local:iso/debian.iso,media=cdrom',
-                        },
-                    },
-                },
-            ),
-            vm_status => {
-                running => 0,
-            },
-        },
-    },
     {
         name => '105_cdrom',
         target => 'pve1',
@@ -1783,7 +1732,6 @@ foreach my $test (@{$tests}) {
     file_set_contents("${run_dir}/replication_config", to_json($replication_config));
     file_set_contents("${run_dir}/storage_config", to_json($storage_config));
     file_set_contents("${run_dir}/source_vdisks", to_json($source_vdisks));
-    file_set_contents("${run_dir}/source_other_volumes", to_json($source_other_volumes));
 
     my $expect_die = $test->{expect_die};
     my $expected = $test->{expected};