diff --git a/src/cairo-pattern.c b/src/cairo-pattern.c
index e92d87d..9b1001c 100644
--- a/src/cairo-pattern.c
+++ b/src/cairo-pattern.c
@@ -1473,10 +1473,10 @@ _cairo_pattern_acquire_surface_for_surface (cairo_surface_pattern_t   *pattern,
 		 * want to clone more than the surface itself, (we
 		 * know we're not repeating at this point due to the
 		 * above. */
-		x = MAX (0, floor (x1));
-		y = MAX (0, floor (y1));
-		width = MIN (extents.width, ceil (x2)) - x;
-		height = MIN (extents.height, ceil (y2)) - y;
+		x = MAX (0, floor (x1) - 1);
+		y = MAX (0, floor (y1) - 1);
+		width = MIN (extents.width, ceil (x2) + 1) - x;
+		height = MIN (extents.height, ceil (y2) + 1) - y;
 	    }
 	    x += tx;
 	    y += ty;