diff --git a/cds-feature-attachments/src/main/resources/cds/com.sap.cds/cds-feature-attachments/attachments-annotations.cds b/cds-feature-attachments/src/main/resources/cds/com.sap.cds/cds-feature-attachments/attachments-annotations.cds
index 11074d98..a705bba6 100644
--- a/cds-feature-attachments/src/main/resources/cds/com.sap.cds/cds-feature-attachments/attachments-annotations.cds
+++ b/cds-feature-attachments/src/main/resources/cds/com.sap.cds/cds-feature-attachments/attachments-annotations.cds
@@ -7,6 +7,7 @@ annotate MediaData with @UI.MediaResource: {Stream: content} {
     content   @(
         title                           : '{i18n>attachment_content}',
         Core.MediaType                  : mimeType,
+        Core.AcceptableMediaTypes       : ['image/jpeg'],
         Core.ContentDisposition.Filename: fileName,
         Core.ContentDisposition.Type    : 'inline'
     );