diff --git a/ChangeLog b/ChangeLog
index 8b835e5..528f6d9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2003-01-26 20:07  Alexander Malmberg <alexander@malmberg.org>
+
+	* Source/x11/XWindowBuffer.m (-_exposeRect:): Round rectangle to
+	expose outwards so all pixels intersected by the expose rectangle
+	are actually exposed.
+
 2003-01-26 20:04  Alexander Malmberg <alexander@malmberg.org>
 
 	* Headers/xlib/XGPrivate.h, Source/art/ARTContext.m,
diff --git a/Source/x11/XWindowBuffer.m b/Source/x11/XWindowBuffer.m
index 3d70259..f5ebd75 100644
--- a/Source/x11/XWindowBuffer.m
+++ b/Source/x11/XWindowBuffer.m
@@ -27,6 +27,7 @@
 
 #include "x11/XWindowBuffer.h"
 
+#include <math.h>
 #include <sys/ipc.h>
 #include <sys/shm.h>
 
@@ -318,12 +319,20 @@ rects in the new size before we are updated.
 
 For now, we just intersect with our known size to avoid problems with X.
 */
+  NSRect r2;
 
   r = NSIntersectionRect(r, NSMakeRect(0, 0,
     window->xframe.size.width, window->xframe.size.height));
   if (NSIsEmptyRect(r))
     return;
 
+  r2.origin.x=floor(r.origin.x);
+  r2.origin.y=floor(r.origin.y);
+  r2.size.width=ceil(r.size.width+r.origin.x-r2.origin.x);
+  r2.size.height=ceil(r.size.height+r.origin.y-r2.origin.y);
+
+  r=r2;
+
   if (use_shm)
     {