--- jmorecfg.h.orig	2012-08-10 17:23:41.521295445 +0100
+++ jmorecfg.h	2012-08-10 17:22:25.105291584 +0100
@@ -322,7 +322,7 @@
 #define RGB_RED		0	/* Offset of Red in an RGB scanline element */
 #define RGB_GREEN	1	/* Offset of Green */
 #define RGB_BLUE	2	/* Offset of Blue */
-#define RGB_PIXELSIZE	3	/* JSAMPLEs per RGB scanline element */
+#define RGB_PIXELSIZE	4	/* JSAMPLEs per RGB scanline element */
 
 
 /* Definitions for speed-related optimizations. */