diff --git a/debian/changelog b/debian/changelog
index 4c6d6c0c..587c0a37 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -7,6 +7,7 @@ wine-staging (1.7.39) UNRELEASED; urgency=low
   * Added patch to avoid crash in d3d9 tests by skipping when texture/surface creation fails.
   * Added patch to fix wrong version of ID3DXEffect interface for d3dx9_24.
   * Added patch to fix wrong version of ID3DXEffect interface for d3dx9_25.
+  * Added patch to allow to query for d3dx9_26 specific ID3DXEffect interface.
   * Removed patch to avoid hardcoded values for sizeof(GUID) (accepted upstream).
   * Removed patches for SLGetWindowsInformationDWORD (accepted upstream).
  -- Sebastian Lackner <sebastian@fds-team.de>  Mon, 09 Mar 2015 16:52:35 +0100
diff --git a/patches/d3dx9_26-ID3DXEffect/0001-d3dx9_36-Allow-to-query-for-d3dx9_26-specific-ID3DXE.patch b/patches/d3dx9_26-ID3DXEffect/0001-d3dx9_36-Allow-to-query-for-d3dx9_26-specific-ID3DXE.patch
new file mode 100644
index 00000000..1038e3c2
--- /dev/null
+++ b/patches/d3dx9_26-ID3DXEffect/0001-d3dx9_36-Allow-to-query-for-d3dx9_26-specific-ID3DXE.patch
@@ -0,0 +1,38 @@
+From 5dfbc3b61422b52ee6763b39b60d0e6bce6cc63b Mon Sep 17 00:00:00 2001
+From: Sebastian Lackner <sebastian@fds-team.de>
+Date: Sat, 14 Mar 2015 17:00:08 +0100
+Subject: d3dx9_36: Allow to query for d3dx9_26 specific ID3DXEffect interface.
+
+---
+ dlls/d3dx9_36/effect.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/dlls/d3dx9_36/effect.c b/dlls/d3dx9_36/effect.c
+index 8e2f850..0cb220a 100644
+--- a/dlls/d3dx9_36/effect.c
++++ b/dlls/d3dx9_36/effect.c
+@@ -27,6 +27,11 @@
+ #include "wingdi.h"
+ #include "d3dx9_36_private.h"
+ #include "d3dcompiler.h"
++#include "initguid.h"
++
++/* d3dx9_26 provides an ID3DXEffect interface where the last function SetRawValue
++ * is missing. Since its otherwise identical, we just use the same vtable. */
++DEFINE_GUID(IID_ID3DXEffect26, 0xc7b17651, 0x5420, 0x490e, 0x8a, 0x7f, 0x92, 0x36, 0x75, 0xa2, 0xd6, 0x87);
+ 
+ /* Constants for special INT/FLOAT conversation */
+ #define INT_FLOAT_MULTI 255.0f
+@@ -2501,7 +2506,8 @@ static HRESULT WINAPI ID3DXEffectImpl_QueryInterface(ID3DXEffect *iface, REFIID
+     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), object);
+ 
+     if (IsEqualGUID(riid, &IID_IUnknown) ||
+-        IsEqualGUID(riid, &IID_ID3DXEffect))
++        IsEqualGUID(riid, &IID_ID3DXEffect) ||
++        IsEqualGUID(riid, &IID_ID3DXEffect26))
+     {
+         iface->lpVtbl->AddRef(iface);
+         *object = iface;
+-- 
+2.3.2
+
diff --git a/patches/patchinstall.sh b/patches/patchinstall.sh
index 4886dc58..f90ab462 100755
--- a/patches/patchinstall.sh
+++ b/patches/patchinstall.sh
@@ -76,6 +76,7 @@ patch_enable_all ()
 	enable_d3drm_Specfile="$1"
 	enable_d3dx9_24_ID3DXEffect="$1"
 	enable_d3dx9_25_ID3DXEffect="$1"
+	enable_d3dx9_26_ID3DXEffect="$1"
 	enable_d3dx9_36_AnimationController="$1"
 	enable_d3dx9_36_D3DXStubs="$1"
 	enable_d3dx9_36_DDS="$1"
@@ -273,6 +274,9 @@ patch_enable ()
 		d3dx9_25-ID3DXEffect)
 			enable_d3dx9_25_ID3DXEffect="$2"
 			;;
+		d3dx9_26-ID3DXEffect)
+			enable_d3dx9_26_ID3DXEffect="$2"
+			;;
 		d3dx9_36-AnimationController)
 			enable_d3dx9_36_AnimationController="$2"
 			;;
@@ -1394,6 +1398,18 @@ if test "$enable_d3dx9_24_ID3DXEffect" -eq 1; then
 	) >> "$patchlist"
 fi
 
+# Patchset d3dx9_26-ID3DXEffect
+# |
+# | Modified files:
+# |   *	dlls/d3dx9_36/effect.c
+# |
+if test "$enable_d3dx9_26_ID3DXEffect" -eq 1; then
+	patch_apply d3dx9_26-ID3DXEffect/0001-d3dx9_36-Allow-to-query-for-d3dx9_26-specific-ID3DXE.patch
+	(
+		echo '+    { "Sebastian Lackner", "d3dx9_36: Allow to query for d3dx9_26 specific ID3DXEffect interface.", 1 },';
+	) >> "$patchlist"
+fi
+
 # Patchset wined3d-DXTn
 # |
 # | This patchset fixes the following Wine bugs: