diff -urN Blursk-1.3.orig/blursk.h Blursk-1.3/blursk.h
--- Blursk-1.3.orig/blursk.h	2005-11-09 16:33:15.000000000 -0500
+++ Blursk-1.3/blursk.h	2005-11-09 16:33:42.000000000 -0500
@@ -132,8 +132,8 @@
 extern guchar **img_source;
 extern guint img_height, img_physheight;
 extern guint img_width, img_physwidth;
-extern guint img_bpl, img_physbpl;
-extern guint img_chunks;
+extern gint img_bpl;
+extern guint img_chunks, img_physbpl;
 extern guchar img_rippleshift;
 extern void img_resize(int, int);
 extern void img_copyback(void);
diff -urN Blursk-1.3.orig/img.c Blursk-1.3/img.c
--- Blursk-1.3.orig/img.c	2005-11-09 16:33:15.000000000 -0500
+++ Blursk-1.3/img.c	2005-11-09 16:33:49.000000000 -0500
@@ -30,7 +30,7 @@
 guchar	**img_source;	/* an array of pixel pointers, for blur motion */
 guint	img_height;	/* height of the current image */
 guint	img_width;	/* width of the current image */
-guint	img_bpl;	/* bytes per line of the current image */
+gint	img_bpl;	/* bytes per line of the current image */
 guint	img_chunks;	/* number of 8-pixel chunks in the image */
 
 guint	img_physheight;	/* height of the current window */