diff --git a/c/xlib/display.c b/c/xlib/display.c
index 6ea8409..1619a4f 100644
--- a/c/xlib/display.c
+++ b/c/xlib/display.c
@@ -107,7 +107,7 @@ s48_value Display_Screen_Count(s48_value Xdisplay) {
 s48_value Display_Image_Byte_Order(s48_value Xdisplay) {
   Display* dpy = EXTRACT_DISPLAY(Xdisplay);
   return Bits_To_Symbols( (unsigned long)ImageByteOrder(dpy),
-			  0, Byte_Order_Syms );
+			  Byte_Order_Syms );
 }
 
 s48_value Display_Bitmap_Unit(s48_value Xdisplay) {
@@ -118,7 +118,7 @@ s48_value Display_Bitmap_Unit(s48_value Xdisplay) {
 s48_value Display_Bitmap_Bit_Order(s48_value Xdisplay) {
   Display* dpy = EXTRACT_DISPLAY(Xdisplay);
   return Bits_To_Symbols( (unsigned long)BitmapBitOrder(dpy),
-			  0, Byte_Order_Syms );
+			  Byte_Order_Syms );
 }
 
 s48_value Display_Bitmap_Pad(s48_value Xdisplay) {