diff --git a/shared/chat/conversation/messages/attachment.js b/shared/chat/conversation/messages/attachment.js
index <HASH>..<HASH> 100644
--- a/shared/chat/conversation/messages/attachment.js
+++ b/shared/chat/conversation/messages/attachment.js
@@ -38,7 +38,7 @@ function PreviewImage ({message: {attachmentDurationMs, previewDurationMs, previ
       position: 'relative',
       alignItems: 'flex-end',
     }
-    const imgStyle = {...globalStyles.rounded, ...(previewSize ? {width: previewSize.width, height: previewSize.height} : {maxHeight: 320, maxWidth: 320})}
+    const imgStyle = {borderRadius: 4, ...(previewSize ? {width: previewSize.width, height: previewSize.height} : {maxHeight: 320, maxWidth: 320})}
 
     switch (messageState) {
       case 'uploading':
Increase attachment preview border radius to match mockups