diff --git a/misc/magicpoint/files/patch-mng.c b/misc/magicpoint/files/patch-mng.c
new file mode 100644
index 000000000000..4e85b27a1853
--- /dev/null
+++ b/misc/magicpoint/files/patch-mng.c
@@ -0,0 +1,18 @@
+--- mng.c.orig	2004-09-01 03:50:32 UTC
++++ mng.c
+@@ -48,13 +48,13 @@ void mng_window_setup __P((mngstuff *mymng, int x, int
+ /* callbacks for the mng decoder */
+ 
+ /* memory allocation; data must be zeroed */
+-mng_ptr mymngalloc(mng_uint32 size)
++mng_ptr mymngalloc(mng_size_t size)
+ {
+ 	return (mng_ptr)calloc(1, size);
+ }
+ 
+ /* memory deallocation */
+-void mymngfree(mng_ptr p, mng_uint32 size)
++void mymngfree(mng_ptr p, mng_size_t size)
+ {
+ 	free(p);
+ 	return;