diff --git a/app/src/main/java/eu/faircode/email/Core.java b/app/src/main/java/eu/faircode/email/Core.java
index b3a4408064..a468391169 100644
--- a/app/src/main/java/eu/faircode/email/Core.java
+++ b/app/src/main/java/eu/faircode/email/Core.java
@@ -740,7 +740,7 @@ class Core {
                     Log.w(ex);
                 }
             else
-                throw new IllegalArgumentException("label/delete");
+                throw new IllegalArgumentException("label/delete folder=" + folder.name);
         } else {
             try {
                 Message imessage = ifolder.getMessageByUID(message.uid);