diff --git a/src/input/UpDownInterruptBase.h b/src/input/UpDownInterruptBase.h
index 789ba2310..a83a298f2 100644
--- a/src/input/UpDownInterruptBase.h
+++ b/src/input/UpDownInterruptBase.h
@@ -32,6 +32,6 @@ class UpDownInterruptBase : public Observable<const InputEvent *>, public concur
     unsigned long lastUpKeyTime = 0;
     unsigned long lastDownKeyTime = 0;
     unsigned long lastPressKeyTime = 0;
-    unsigned long updownDebounceMs;
+    unsigned long updownDebounceMs = 50;
     const unsigned long pressDebounceMs = 200;
 };