diff --git a/emulators/bochs/patches/patch-af b/emulators/bochs/patches/patch-af
new file mode 100644
index 000000000000..ccd774aa2774
--- /dev/null
+++ b/emulators/bochs/patches/patch-af
@@ -0,0 +1,11 @@
+--- iodev/iodebug.h.orig	2008-05-01 20:46:58.000000000 +0000
++++ iodev/iodebug.h	2009-03-20 11:58:42.000000000 +0000
+@@ -18,7 +18,7 @@
+   virtual void init(void);
+   virtual void reset (unsigned type) {}
+   static void mem_write(BX_CPU_C *cpu, bx_phy_address addr, unsigned len, void *data);
+-  static void mem_read(BX_CPU_C *cpu, bx_phy_addressu addr, unsigned len, void *data);
++  static void mem_read(BX_CPU_C *cpu, bx_phy_address addr, unsigned len, void *data);
+ 
+ private:
+   static Bit32u read_handler(void *this_ptr, Bit32u address, unsigned io_len);