diff --git a/app/src/main/java/eu/faircode/email/MessageClassifier.java b/app/src/main/java/eu/faircode/email/MessageClassifier.java
index 5186a1e1e5..d35f561785 100644
--- a/app/src/main/java/eu/faircode/email/MessageClassifier.java
+++ b/app/src/main/java/eu/faircode/email/MessageClassifier.java
@@ -422,6 +422,7 @@ public class MessageClassifier {
     }
 
     static synchronized void clear(@NonNull Context context) {
+        accountMsgIds.clear();
         wordClassFrequency.clear();
         dirty = true;
         Log.i("Classifier data cleared");