diff --git a/library/lcd/lcd_comm_rev_c.py b/library/lcd/lcd_comm_rev_c.py
index f2ef3789..91aeb7f3 100644
--- a/library/lcd/lcd_comm_rev_c.py
+++ b/library/lcd/lcd_comm_rev_c.py
@@ -339,7 +339,7 @@ def DisplayPILImage(
                     display_bmp_cmd = Command.DISPLAY_BITMAP_8INCH
 
                 self._send_command(display_bmp_cmd,
-                                   payload=bytearray(int(self.display_width * self.display_width / 64).to_bytes(2)))
+                                   payload=bytearray(int(self.display_width * self.display_width / 64).to_bytes(2, "big")))
                 self._send_command(Command.SEND_PAYLOAD,
                                    payload=bytearray(self._generate_full_image(image)),
                                    readsize=1024)
diff --git a/library/lcd/lcd_comm_rev_d.py b/library/lcd/lcd_comm_rev_d.py
index d7fda68b..a47b7f0e 100644
--- a/library/lcd/lcd_comm_rev_d.py
+++ b/library/lcd/lcd_comm_rev_d.py
@@ -89,7 +89,7 @@ def Reset(self):
     def Clear(self):
         # HW revision D does not implement a Clear command: display a blank image on the whole screen
         color = 0xFFFF  # RGB565 White color
-        color_bytes = bytearray(color.to_bytes(2))
+        color_bytes = bytearray(color.to_bytes(2, "big"))
         self.SendCommand(cmd=Command.DISPCOLOR, payload=color_bytes)
 
     def ScreenOff(self):