diff --git a/uisimulator/bmp.c b/uisimulator/bmp.c
index 85a0fd2ffe..828f855295 100644
--- a/uisimulator/bmp.c
+++ b/uisimulator/bmp.c
@@ -82,12 +82,17 @@ static unsigned int compressed_size;
 static unsigned int rounded_width;
 #endif
 
+#ifdef LITTLE_ENDIAN
+#define readshort(x) x
+#define readlong(x) x
+#else
+
 #define readshort(x) (((x&0xff00)>>8)|((x&0x00ff)<<8))
 #define readlong(x) (((x&0xff000000)>>24)| \
                      ((x&0x00ff0000)>>8) | \
                      ((x&0x0000ff00)<<8) | \
                      ((x&0x000000ff)<<24))
-                     
+#endif
 
 /*********************************************************************
  * read_bmp_file()