diff --git a/src/screen.cpp b/src/screen.cpp
index 19f1fd4f..00c361b2 100644
--- a/src/screen.cpp
+++ b/src/screen.cpp
@@ -57,6 +57,8 @@ static char btPIN[16] = "888888";
 
 uint8_t imgBattery[16] = {0xFF, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0xE7, 0x3C};
 
+// if defined a pixel will blink to show redraws
+// #define SHOW_REDRAWS
 #ifdef SHOW_REDRAWS
 static bool heartbeat = false;
 #endif