From fefcbb147b92af6b732429596e48beb0b03b1c16 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20G=C3=B6ttgens?= <tgoettgens@gmail.com>
Date: Tue, 4 Oct 2022 15:27:18 +0200
Subject: [PATCH] fix #1646

---
 src/graphics/Screen.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/graphics/Screen.cpp b/src/graphics/Screen.cpp
index 184f3eec4..b21392c14 100644
--- a/src/graphics/Screen.cpp
+++ b/src/graphics/Screen.cpp
@@ -1646,6 +1646,9 @@ void DebugInfo::drawFrameSettings(OLEDDisplay *display, OLEDDisplayUiState *stat
 // adjust Brightness cycle trough 1 to 254 as long as attachDuringLongPress is true
 void Screen::adjustBrightness()
 {
+    if (!useDisplay)
+        return;
+
     if (brightness == 254) {
         brightness = 0;
     } else {