diff --git a/models/attachment/src/index.ts b/models/attachment/src/index.ts
index 054f05bdbc..607d0c61bb 100644
--- a/models/attachment/src/index.ts
+++ b/models/attachment/src/index.ts
@@ -198,7 +198,7 @@ export function createModel (builder: Builder): void {
     core.space.Model,
     {
       contentType: ['video/*', 'audio/*'],
-      alignment: 'float',
+      alignment: 'centered',
       component: attachment.component.MediaViewer,
       extension: attachment.extension.AttachmentPreview
     },
diff --git a/plugins/attachment-resources/src/utils.ts b/plugins/attachment-resources/src/utils.ts
index 30e4fb9c86..7ae141931c 100644
--- a/plugins/attachment-resources/src/utils.ts
+++ b/plugins/attachment-resources/src/utils.ts
@@ -195,7 +195,7 @@ previewTypesQuery.query(attachments.class.AttachmentPreviewExtension, {}, (resul
 })
 
 function getPreviewTypeRegExp (type: string): RegExp {
-  return new RegExp(type.replace(/\//g, '\\/'))
+  return new RegExp(`^${type.replaceAll('/', '\\/').replaceAll('*', '.*')}$`)
 }
 
 /**