diff --git a/app/src/main/java/eu/faircode/email/MessageHelper.java b/app/src/main/java/eu/faircode/email/MessageHelper.java
index 8d2827a35b..1949d7cd0f 100644
--- a/app/src/main/java/eu/faircode/email/MessageHelper.java
+++ b/app/src/main/java/eu/faircode/email/MessageHelper.java
@@ -241,7 +241,7 @@ public class MessageHelper {
             "$IsTrusted", // Fastmail
             "$X-ME-Annot-2", // Fastmail
             "$purchases", // mailbox.org
-            "$social " // mailbox.org
+            "$social" // mailbox.org
     ));
 
     // https://tools.ietf.org/html/rfc4021