diff --git a/TFT_Drivers/ST7787_Rotation.h b/TFT_Drivers/ST7787_Rotation.h
index 13a0ebe..3b9f8f6 100644
--- a/TFT_Drivers/ST7787_Rotation.h
+++ b/TFT_Drivers/ST7787_Rotation.h
@@ -1,17 +1,25 @@
 
-// This is the command sequence that rotates the ST7735 driver coordinate frame
+// This is the command sequence that rotates the ST7787 driver coordinate frame
+//
+// Rotation 0 is portrait mode. Rotations 1, 2, and 3 are rotated clockwise
+// by 90, 180, and 270 degrees.
+//
+// Vertical refresh direction is set to be the same as data write order.
+// So coordinate 0 is refresh first, and coordinate 319 is refreshed last.
+// For some reason, counter to datasheet information, MADCTL must be set
+// with the ML bit as the inverse of the MY bit to achieve this.
 
   rotation = m % 4; // Limit the range of values to 0-3
 
   writecommand(TFT_MADCTL);
   switch (rotation) {
     case 0:
-      writedata(TFT_MAD_RGB);
+      writedata(TFT_MAD_ML | TFT_MAD_RGB);
       _width  = TFT_WIDTH;
       _height = TFT_HEIGHT;
       break;
     case 1:
-      writedata(TFT_MAD_MX | TFT_MAD_MV | TFT_MAD_RGB);
+      writedata(TFT_MAD_ML | TFT_MAD_MX | TFT_MAD_MV | TFT_MAD_RGB);
       _width  = TFT_HEIGHT;
       _height = TFT_WIDTH;
       break;