diff --git a/patches/d3d11-Deferred_Context/0042-d3d11-Correctly-align-map-info-buffer.patch b/patches/d3d11-Deferred_Context/0042-d3d11-Correctly-align-map-info-buffer.patch
new file mode 100644
index 00000000..87bbf0e5
--- /dev/null
+++ b/patches/d3d11-Deferred_Context/0042-d3d11-Correctly-align-map-info-buffer.patch
@@ -0,0 +1,43 @@
+From 3fe8383d68770398720839e579de182e69b16ff5 Mon Sep 17 00:00:00 2001
+From: Kimmo Myllyvirta <kimmo.myllyvirta@gmail.com>
+Date: Sun, 27 May 2018 11:44:36 +1000
+Subject: [PATCH] d3d11: Correctly align map info buffer
+
+---
+ dlls/d3d11/device.c | 6 ++++--
+ 1 file changed, 4 insertions(+), 2 deletions(-)
+
+diff --git a/dlls/d3d11/device.c b/dlls/d3d11/device.c
+index 745a22d91b..210f9600d2 100644
+--- a/dlls/d3d11/device.c
++++ b/dlls/d3d11/device.c
+@@ -4692,6 +4692,7 @@ static HRESULT STDMETHODCALLTYPE d3d11_deferred_context_Map(ID3D11DeviceContext
+     struct wined3d_resource *wined3d_resource;
+     struct wined3d_map_info map_info;
+     struct deferred_call *call, *previous = NULL;
++    SIZE_T align;
+     HRESULT hr;
+ 
+     TRACE("iface %p, resource %p, subresource_idx %u, map_type %u, map_flags %#x, mapped_subresource %p.\n",
+@@ -4727,7 +4728,8 @@ static HRESULT STDMETHODCALLTYPE d3d11_deferred_context_Map(ID3D11DeviceContext
+     if (FAILED(hr))
+         return hr;
+ 
+-    if (!(call = add_deferred_call(context, map_info.size)))
++    align = ((sizeof(*call) + 0xf) & ~0xf) - sizeof(*call);
++    if (!(call = add_deferred_call(context, map_info.size + align)))
+         return E_OUTOFMEMORY;
+ 
+     call->cmd = DEFERRED_MAP;
+@@ -4736,7 +4738,7 @@ static HRESULT STDMETHODCALLTYPE d3d11_deferred_context_Map(ID3D11DeviceContext
+     call->map_info.subresource_idx = subresource_idx;
+     call->map_info.map_type = map_type;
+     call->map_info.map_flags = map_flags;
+-    call->map_info.buffer = (void *)(call + 1);
++    call->map_info.buffer = (BYTE *)(call + 1) + align;
+     call->map_info.size = map_info.size;
+ 
+     if (previous)
+-- 
+2.17.0
+
diff --git a/patches/d3d11-Deferred_Context/definition b/patches/d3d11-Deferred_Context/definition
index eee30301..4668564a 100644
--- a/patches/d3d11-Deferred_Context/definition
+++ b/patches/d3d11-Deferred_Context/definition
@@ -1,3 +1,4 @@
 Fixes: [42191] Add semi-stub for D3D11 deferred context implementation
+Fixes: [44089] Correcly align the mapinfo buffer.
 #This is pretty dumb.
-Depends: nvapi-Stub_DLL
\ No newline at end of file
+Depends: nvapi-Stub_DLL
diff --git a/patches/patchinstall.sh b/patches/patchinstall.sh
index 9f528d11..48c013b9 100755
--- a/patches/patchinstall.sh
+++ b/patches/patchinstall.sh
@@ -3052,6 +3052,7 @@ if test "$enable_d3d11_Deferred_Context" -eq 1; then
 	patch_apply d3d11-Deferred_Context/0039-d3d11-Implement-d3d11_deferred_context_UpdateSubreso.patch
 	patch_apply d3d11-Deferred_Context/0040-d3d11-Implement-restoring-of-state-after-executing-a.patch
 	patch_apply d3d11-Deferred_Context/0041-d3d11-Allow-NULL-pointer-for-initial-count-in-d3d11_.patch
+	patch_apply d3d11-Deferred_Context/0042-d3d11-Correctly-align-map-info-buffer.patch
 	(
 		printf '%s\n' '+    { "Kimmo Myllyvirta", "d3d11: Add stub deferred rendering context.", 1 },';
 		printf '%s\n' '+    { "Michael Müller", "wined3d: Add wined3d_resource_map_info function.", 1 },';
@@ -3094,6 +3095,7 @@ if test "$enable_d3d11_Deferred_Context" -eq 1; then
 		printf '%s\n' '+    { "Michael Müller", "d3d11: Implement d3d11_deferred_context_UpdateSubresource.", 1 },';
 		printf '%s\n' '+    { "Michael Müller", "d3d11: Implement restoring of state after executing a command list.", 1 },';
 		printf '%s\n' '+    { "Steve Melenchuk", "d3d11: Allow NULL pointer for initial count in d3d11_deferred_context_CSSetUnorderedAccessViews.", 1 },';
+		printf '%s\n' '+    { "Kimmo Myllyvirta", "d3d11: Correctly align map info buffer.", 1 },';
 	) >> "$patchlist"
 fi