diff --git a/win/share/tile2bmp.c b/win/share/tile2bmp.c
index 2ca2490b0..9b3dbafc5 100644
--- a/win/share/tile2bmp.c
+++ b/win/share/tile2bmp.c
@@ -50,7 +50,7 @@ extern char *FDECL(tilename, (int, int));
 
 static short leshort(short x)
 {
-#ifdef __ppc__
+#ifdef __BIG_ENDIAN__
     return ((x&0xff)<<8)|((x>>8)&0xff);
 #else
     return x;
@@ -60,7 +60,7 @@ static short leshort(short x)
 
 static long lelong(long x)
 {
-#ifdef __ppc__
+#ifdef __BIG_ENDIAN__
     return ((x&0xff)<<24)|((x&0xff00)<<8)|((x>>8)&0xff00)|((x>>24)&0xff);
 #else
     return x;