diff --git a/.gitignore b/.gitignore
index da1f58b..61d976f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /harfbuzz-0.9.3.tar.bz2
 /harfbuzz-0.9.7.tar.bz2
+/harfbuzz-0.9.9.tar.bz2
diff --git a/GetProcAddress_Script_OpenType.diff b/GetProcAddress_Script_OpenType.diff
new file mode 100644
index 0000000..3c87a70
--- /dev/null
+++ b/GetProcAddress_Script_OpenType.diff
@@ -0,0 +1,81 @@
+diff --git a/src/hb-uniscribe.cc b/src/hb-uniscribe.cc
+index 2f01c28..93bce52 100644
+--- a/src/hb-uniscribe.cc
++++ b/src/hb-uniscribe.cc
+@@ -240,6 +240,11 @@ _hb_uniscribe_shape (hb_shape_plan_t    *shape_plan,
+   hb_face_t *face = font->face;
+   hb_uniscribe_shaper_face_data_t *face_data = HB_SHAPER_DATA_GET (face);
+   hb_uniscribe_shaper_font_data_t *font_data = HB_SHAPER_DATA_GET (font);
++  SIOT siot;
++  SSOT ssot;
++  SPOT spot;
++  HINSTANCE hinstLib = LoadLibrary("usp10.dll");
++    
+ 
+ #define FAIL(...) \
+   HB_STMT_START { \
+@@ -249,6 +254,21 @@ _hb_uniscribe_shape (hb_shape_plan_t    *shape_plan,
+ 
+   HRESULT hr;
+ 
++  if (hinstLib == NULL)
++    FAIL ("LoadLibrary(\"usp10.dll\") failed:", NULL);
++  
++  siot = (SIOT)GetProcAddress(hinstLib, "ScriptItemizeOpenType");
++  if (siot == NULL)
++    FAIL ("GetProcAddress(\"ScriptItemizeOpenType\") failed:", NULL);
++  
++  ssot = (SSOT)GetProcAddress(hinstLib, "ScriptShapeOpenType");
++  if (ssot == NULL)
++    FAIL ("GetProcAddress(\"ScriptShapeOpenType\") failed:", NULL);
++  
++  spot = (SPOT)GetProcAddress(hinstLib, "ScriptPlaceOpenType");
++  if (ssot == NULL)
++    FAIL ("GetProcAddress(\"ScriptPlaceOpenType\") failed:", NULL);
++  
+ retry:
+ 
+   unsigned int scratch_size;
+@@ -312,7 +332,7 @@ retry:
+   bidi_state.uBidiLevel = HB_DIRECTION_IS_FORWARD (buffer->props.direction) ? 0 : 1;
+   bidi_state.fOverrideDirection = 1;
+ 
+-  hr = ScriptItemizeOpenType (wchars,
++  hr = siot (wchars,
+ 			      chars_len,
+ 			      MAX_ITEMS,
+ 			      &bidi_control,
+@@ -344,7 +364,7 @@ retry:
+     unsigned int item_chars_len = items[i + 1].iCharPos - chars_offset;
+ 
+   retry_shape:
+-    hr = ScriptShapeOpenType (font_data->hdc,
++    hr = ssot (font_data->hdc,
+ 			      &font_data->script_cache,
+ 			      &items[i].a,
+ 			      script_tags[i],
+@@ -386,7 +406,7 @@ retry:
+     for (unsigned int j = chars_offset; j < chars_offset + item_chars_len; j++)
+       log_clusters[j] += glyphs_offset;
+ 
+-    hr = ScriptPlaceOpenType (font_data->hdc,
++    hr = spot (font_data->hdc,
+ 			      &font_data->script_cache,
+ 			      &items[i].a,
+ 			      script_tags[i],
+diff --git a/src/hb-uniscribe.h b/src/hb-uniscribe.h
+index 51887c8..b7e55e2 100644
+--- a/src/hb-uniscribe.h
++++ b/src/hb-uniscribe.h
+@@ -33,6 +33,11 @@
+ #define _WIN32_WINNT 0x0600
+ #endif
+ #include <windows.h>
++#include <usp10.h>
++
++typedef HRESULT WINAPI (*SIOT)(const WCHAR*,int,int,const SCRIPT_CONTROL*,const SCRIPT_STATE*,SCRIPT_ITEM*,OPENTYPE_TAG*,int*);
++typedef HRESULT WINAPI (*SSOT)(HDC,SCRIPT_CACHE*,SCRIPT_ANALYSIS*,OPENTYPE_TAG,OPENTYPE_TAG,int*,TEXTRANGE_PROPERTIES**,int,const WCHAR*,int,int,WORD*,SCRIPT_CHARPROP*,WORD*,SCRIPT_GLYPHPROP*,int*);
++typedef HRESULT WINAPI (*SPOT)(HDC,SCRIPT_CACHE*,SCRIPT_ANALYSIS*,OPENTYPE_TAG,OPENTYPE_TAG,int*,TEXTRANGE_PROPERTIES**,int,const WCHAR*,const WORD*,const SCRIPT_CHARPROP*,int,const WORD*,const SCRIPT_GLYPHPROP*,int,int*,GOFFSET*,ABC*);
+ 
+ HB_BEGIN_DECLS
+ 
diff --git a/harfbuzz-0.9.9-fix-build-failure.patch b/harfbuzz-0.9.9-fix-build-failure.patch
new file mode 100644
index 0000000..8d73228
--- /dev/null
+++ b/harfbuzz-0.9.9-fix-build-failure.patch
@@ -0,0 +1,11 @@
+--- harfbuzz-0.9.9/src/hb-uniscribe.h.orig	2012-12-24 14:28:27.539246473 +0100
++++ harfbuzz-0.9.9/src/hb-uniscribe.h	2012-12-24 14:28:49.002338096 +0100
+@@ -29,7 +29,7 @@
+ 
+ #include "hb.h"
+ 
+-#ifndef _WIN32_WINNT
++#if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600
+ #define _WIN32_WINNT 0x0600
+ #endif
+ #include <windows.h>
diff --git a/mingw-harfbuzz.spec b/mingw-harfbuzz.spec
index cb75afb..9e8f0b2 100644
--- a/mingw-harfbuzz.spec
+++ b/mingw-harfbuzz.spec
@@ -1,7 +1,7 @@
 %{?mingw_package_header}
 
 Name:           mingw-harfbuzz
-Version:        0.9.7
+Version:        0.9.9
 Release:        1%{?dist}
 Summary:        MinGW Windows Harfbuzz library
 
@@ -26,6 +26,12 @@ BuildRequires:  mingw64-freetype
 BuildRequires:  mingw64-cairo
 BuildRequires:  mingw64-icu
 
+# https://bugs.freedesktop.org/show_bug.cgi?id=55494
+Patch0:         GetProcAddress_Script_OpenType.diff
+
+# Fix build failure in harfbuzz 0.9.9. Is related to the bug above
+Patch1:         harfbuzz-0.9.9-fix-build-failure.patch
+
 
 %description
 HarfBuzz is an implementation of the OpenType Layout engine.
@@ -67,6 +73,8 @@ Static version of the MinGW Windows Harfbuzz library.
 
 %prep
 %setup -q -n harfbuzz-%{version}
+%patch0 -p1
+%patch1 -p1
 
 
 %build
@@ -111,6 +119,10 @@ find $RPM_BUILD_ROOT -name "*.la" -delete
 
 
 %changelog
+* Mon Dec 24 2012 Erik van Pienbroek <epienbro@fedoraproject.org> - 0.9.9-1
+- Update to 0.9.9
+- Fix compatibility with WinXP (FreeDesktop Bug #55494)
+
 * Wed Nov 21 2012 Erik van Pienbroek <epienbro@fedoraproject.org> - 0.9.7-1
 - Update to 0.9.7
 
diff --git a/sources b/sources
index 22062d4..e3fc2a2 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-db5382728a912352633d3be2e2a1d988  harfbuzz-0.9.7.tar.bz2
+e901ffe556d706b7d43b272f83be7f09  harfbuzz-0.9.9.tar.bz2