diff --git a/libraries/zf_device/zf_device_ips200.c b/libraries/zf_device/zf_device_ips200.c
index d71a1c0..99b7c99 100644
--- a/libraries/zf_device/zf_device_ips200.c
+++ b/libraries/zf_device/zf_device_ips200.c
@@ -326,8 +326,8 @@ static void ips200_set_region(uint16 x1, uint16 y1, uint16 x2, uint16 y2)
     ips200_write_16bit_data(x2+80);
 
     ips200_write_command(0x2b);
-    ips200_write_16bit_data(y1+20);
-    ips200_write_16bit_data(y2+20);
+    ips200_write_16bit_data(y1);
+    ips200_write_16bit_data(y2);
 
     ips200_write_command(0x2c);
 }