diff --git a/ts/util/attachmentsUtil.ts b/ts/util/attachmentsUtil.ts
index 8637a09a1..5dc375f47 100644
--- a/ts/util/attachmentsUtil.ts
+++ b/ts/util/attachmentsUtil.ts
@@ -62,7 +62,7 @@ export async function autoScaleForAvatar<T extends { contentType: string; blob:
     attachment.contentType !== IMAGE_JPEG
   ) {
     // nothing to do
-    throw new Error('Cannot autoScaleForAvatar another file than PNG,GIF or JPEG.');
+    throw new Error('Cannot autoScaleForAvatar another file than PNG, GIF or JPEG.');
   }
 
   window.log.info('autoscale for avatar', maxMeasurements);