diff --git a/app/src/main/java/eu/faircode/email/ApplicationEx.java b/app/src/main/java/eu/faircode/email/ApplicationEx.java
index 9d059465ee..27a50a98d0 100644
--- a/app/src/main/java/eu/faircode/email/ApplicationEx.java
+++ b/app/src/main/java/eu/faircode/email/ApplicationEx.java
@@ -351,7 +351,6 @@ public class ApplicationEx extends Application
             EntityLog.log(context, "Upgrading from " + version + " to " + BuildConfig.VERSION_CODE);
 
         SharedPreferences.Editor editor = prefs.edit();
-        editor.remove("max_backoff_power");
 
         if (version < BuildConfig.VERSION_CODE)
             editor.remove("crash_report_count");