diff --git a/app/src/main/java/eu/faircode/email/ApplicationEx.java b/app/src/main/java/eu/faircode/email/ApplicationEx.java
index 204c9b7234..3a3b35e82b 100644
--- a/app/src/main/java/eu/faircode/email/ApplicationEx.java
+++ b/app/src/main/java/eu/faircode/email/ApplicationEx.java
@@ -382,8 +382,11 @@ public class ApplicationEx extends Application implements SharedPreferences.OnSh
         else if (version < 1336) {
             if (!prefs.contains("beige"))
                 editor.putBoolean("beige", false);
-        } else if (version < 1385){
+        } else if (version < 1385)
             editor.remove("parse_classes");
+        else if (version < 1388) {
+            if (!BuildConfig.DEBUG)
+                editor.remove("experiments");
         }
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O && !BuildConfig.DEBUG)