diff --git a/preload/apps/ecg/__init__.py b/preload/apps/ecg/__init__.py
index 6e6e820fc6910736e60ab9f5bd81e931a28e5a4e..d8ff79e736d3a267a19d7c5e99697231ed9d6543 100644
--- a/preload/apps/ecg/__init__.py
+++ b/preload/apps/ecg/__init__.py
@@ -224,7 +224,7 @@ def draw_histogram():
             old = value
             x += 1
 
-    draw_leds((60 - int((max(history[-3:]) * scale + OFFSET) - 20)) * 11 / 60)
+    draw_leds((60 - int((max(history[-3:]) * scale + OFFSET_Y) - 20)) * 11 / 60)
     # draw text: mode/bias/write
     if pause_histogram == True:
         disp.print(