diff --git a/README.md b/README.md
index 1e457151..79888e9a 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ Wine. All those differences are also documented on the
 Included bug fixes and improvements
 ===================================
 
-**Bugfixes and features included in the next upcoming release [12]:**
+**Bugfixes and features included in the next upcoming release [13]:**
 
 * Add semi-stub for GetFileVersionInfoExA/W ([Wine Bug #38098](https://bugs.winehq.org/show_bug.cgi?id=38098))
 * Add semi-stub for GetFileVersionInfoSizeExA/W ([Wine Bug #38090](https://bugs.winehq.org/show_bug.cgi?id=38090))
@@ -49,6 +49,7 @@ Included bug fixes and improvements
 * Avoid race-conditions with write watches in WS2_async_accept.
 * Basic handling of write watches triggered while we're on the signal stack.
 * Do not access stack below ESP when restoring thread context.
+* Ignore unsupported alpha channels in TIFF decoder ([Wine Bug #38027](https://bugs.winehq.org/show_bug.cgi?id=38027))
 * Implement D3DXGetShaderOutputSemantics
 * Improve stubs for AEV_{Get,Set}MasterVolumeLevel
 * Improve stubs for AEV_{Get,Set}Mute
diff --git a/debian/changelog b/debian/changelog
index 2c48a102..1a8d2b60 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -16,6 +16,7 @@ wine-staging (1.7.37) UNRELEASED; urgency=low
   * Added patch to improve stubs for AEV_{Get,Set}Mute.
   * Added patch to implement semi-stub for GetFileVersionInfoSizeExA/W.
   * Added patch to implement semi-stub for GetFileVersionInfoExA/W.
+  * Added patch to ignore unsupported alpha channels in TIFF decoder.
   * Removed patches for UTF7 support (accepted upstream).
   * Removed patches for SIO_ADDRESS_LIST_CHANGE ioctl (accepted upstream).
   * Removed patch for IApplicationAssociationRegistration::QueryCurrentDefault (accepted upstream).
diff --git a/patches/patchinstall.sh b/patches/patchinstall.sh
index 1000e7d1..c34a4882 100755
--- a/patches/patchinstall.sh
+++ b/patches/patchinstall.sh
@@ -180,6 +180,7 @@ patch_enable_all ()
 	enable_vcomp_Stub_Functions="$1"
 	enable_version_VersionInfoEx="$1"
 	enable_windowscodecs_TGA_Decoder="$1"
+	enable_windowscodecs_TIFF_Decoder="$1"
 	enable_wine_inf_Performance="$1"
 	enable_wineboot_HKEY_DYN_DATA="$1"
 	enable_winebuild_LinkerVersion="$1"
@@ -569,6 +570,9 @@ patch_enable ()
 		windowscodecs-TGA_Decoder)
 			enable_windowscodecs_TGA_Decoder="$2"
 			;;
+		windowscodecs-TIFF_Decoder)
+			enable_windowscodecs_TIFF_Decoder="$2"
+			;;
 		wine.inf-Performance)
 			enable_wine_inf_Performance="$2"
 			;;
@@ -3126,6 +3130,21 @@ if test "$enable_windowscodecs_TGA_Decoder" -eq 1; then
 	) >> "$patchlist"
 fi
 
+# Patchset windowscodecs-TIFF_Decoder
+# |
+# | This patchset fixes the following Wine bugs:
+# |   *	[#38027] Ignore unsupported alpha channels in TIFF decoder
+# |
+# | Modified files:
+# |   *	dlls/windowscodecs/tiffformat.c
+# |
+if test "$enable_windowscodecs_TIFF_Decoder" -eq 1; then
+	patch_apply windowscodecs-TIFF_Decoder/0001-windowscodecs-Ignore-unsupported-alpha-channel-in-ti.patch
+	(
+		echo '+    { "Dmitry Timoshkov", "windowscodecs: Ignore unsupported alpha channel in tiff_get_decode_info.", 1 },';
+	) >> "$patchlist"
+fi
+
 # Patchset wine.inf-Performance
 # |
 # | This patchset fixes the following Wine bugs:
diff --git a/patches/windowscodecs-TIFF_Decoder/0001-windowscodecs-Ignore-unsupported-alpha-channel-in-ti.patch b/patches/windowscodecs-TIFF_Decoder/0001-windowscodecs-Ignore-unsupported-alpha-channel-in-ti.patch
new file mode 100644
index 00000000..577fd688
--- /dev/null
+++ b/patches/windowscodecs-TIFF_Decoder/0001-windowscodecs-Ignore-unsupported-alpha-channel-in-ti.patch
@@ -0,0 +1,38 @@
+From 905f0a28d10fa0e67b8c2580d65f9001bc15f92a Mon Sep 17 00:00:00 2001
+From: Dmitry Timoshkov <dmitry@baikal.ru>
+Date: Sat, 21 Feb 2015 11:23:58 +0100
+Subject: windowscodecs: Ignore unsupported alpha channel in
+ tiff_get_decode_info.
+
+---
+ dlls/windowscodecs/tiffformat.c | 14 +++++++++++++-
+ 1 file changed, 13 insertions(+), 1 deletion(-)
+
+diff --git a/dlls/windowscodecs/tiffformat.c b/dlls/windowscodecs/tiffformat.c
+index 74a73bc..6302c28 100644
+--- a/dlls/windowscodecs/tiffformat.c
++++ b/dlls/windowscodecs/tiffformat.c
+@@ -326,7 +326,19 @@ static HRESULT tiff_get_decode_info(TIFF *tiff, tiff_decode_info *decode_info)
+         decode_info->invert_grayscale = 1;
+         /* fall through */
+     case 1: /* BlackIsZero */
+-        if (samples != 1)
++        if (samples == 2)
++        {
++            ret = pTIFFGetField(tiff, TIFFTAG_EXTRASAMPLES, &extra_sample_count, &extra_samples);
++            if (!ret)
++            {
++                extra_sample_count = 1;
++                extra_sample = 0;
++                extra_samples = &extra_sample;
++            }
++            else
++                FIXME("ignoring extra alpha %u/%u bps %u\n", extra_sample_count, extra_samples[0], bps);
++        }
++        else if (samples != 1)
+         {
+             FIXME("unhandled grayscale sample count %u\n", samples);
+             return E_FAIL;
+-- 
+2.3.0
+
diff --git a/patches/windowscodecs-TIFF_Decoder/definition b/patches/windowscodecs-TIFF_Decoder/definition
new file mode 100644
index 00000000..0fba27b9
--- /dev/null
+++ b/patches/windowscodecs-TIFF_Decoder/definition
@@ -0,0 +1 @@
+Fixes: [38027] Ignore unsupported alpha channels in TIFF decoder