diff --git a/README.md b/README.md
index 20f0401c..d99cbac4 100644
--- a/README.md
+++ b/README.md
@@ -37,11 +37,12 @@ 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 stub for D3DXComputeTangentFrameEx ([Wine Bug #31984](https://bugs.winehq.org/show_bug.cgi?id=31984))
 * Add stub for D3DXIntersect
 * Ensure X11 input events are handled even without explicit message loop ([Wine Bug #8854](https://bugs.winehq.org/show_bug.cgi?id=8854))
+* Fix access violation when calling GetStringTypeW with NULL src. ([Wine Bug #37759](https://bugs.winehq.org/show_bug.cgi?id=37759))
 * Fix handling of subdirectory in FtpFindFirstFile ([Wine Bug #16526](https://bugs.winehq.org/show_bug.cgi?id=16526))
 * GetMonitorInfo returns the same name for all monitors ([Wine Bug #37709](https://bugs.winehq.org/show_bug.cgi?id=37709))
 * IOCTL_DVD_READ_STRUCTURE expects the wrong size of output buffer for some requests ([Wine Bug #37767](https://bugs.winehq.org/show_bug.cgi?id=37767))
diff --git a/debian/changelog b/debian/changelog
index 619e01a0..d366cb81 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -20,6 +20,7 @@ wine-staging (1.7.34) UNRELEASED; urgency=low
   * Added patch to fix invalid usage of RegOpenKeyExW in msdmo.
   * Added patch to add support for named pipe message mode.
   * Added patch to avoid calling IDirect3DDevice7_DrawIndexedPrimitive if there is no primitive.
+  * Added patch to fix access violation when calling GetStringTypeW with NULL src.
   * Removed patch to implement combase HSTRING objects (accepted upstream).
   * Removed patch to add fake ProductId to registry (accepted upstream).
   * Removed patch to implement stubs for MFStartup and MFShutdown (accepted upstream).
diff --git a/patches/Makefile b/patches/Makefile
index fd8fd67a..563c1b8b 100644
--- a/patches/Makefile
+++ b/patches/Makefile
@@ -53,6 +53,7 @@ PATCHLIST := \
 	iphlpapi-TCP_Table.ok \
 	kernel32-GetFinalPathNameByHandle.ok \
 	kernel32-GetNumaProcessorNode.ok \
+	kernel32-GetStringTypeW.ok \
 	kernel32-GetSystemTimes.ok \
 	kernel32-GetVolumePathName.ok \
 	kernel32-Named_Pipe.ok \
@@ -735,6 +736,21 @@ kernel32-GetNumaProcessorNode.ok:
 		echo '+    { "Michael Müller", "kernel32/tests: Add tests for GetNumaProcessorNode.", 1 },'; \
 	) > kernel32-GetNumaProcessorNode.ok
 
+# Patchset kernel32-GetStringTypeW
+# |
+# | This patchset fixes the following Wine bugs:
+# |   *	[#37759] Fix access violation when calling GetStringTypeW with NULL src.
+# |
+# | Modified files:
+# |   *	dlls/kernel32/locale.c, dlls/kernel32/tests/locale.c
+# |
+.INTERMEDIATE: kernel32-GetStringTypeW.ok
+kernel32-GetStringTypeW.ok:
+	$(call APPLY_FILE,kernel32-GetStringTypeW/0001-kernel32-Allow-empty-source-in-GetStringTypeW.patch)
+	@( \
+		echo '+    { "Christian Faure", "kernel32: Allow empty source in GetStringTypeW.", 1 },'; \
+	) > kernel32-GetStringTypeW.ok
+
 # Patchset kernel32-GetSystemTimes
 # |
 # | This patchset fixes the following Wine bugs:
diff --git a/patches/kernel32-GetStringTypeW/0001-kernel32-Allow-empty-source-in-GetStringTypeW.patch b/patches/kernel32-GetStringTypeW/0001-kernel32-Allow-empty-source-in-GetStringTypeW.patch
new file mode 100644
index 00000000..a685fff2
--- /dev/null
+++ b/patches/kernel32-GetStringTypeW/0001-kernel32-Allow-empty-source-in-GetStringTypeW.patch
@@ -0,0 +1,57 @@
+From 62e504c9dcad87ffd419b5bb157c88342934ff61 Mon Sep 17 00:00:00 2001
+From: Christian Faure <christian.faurebouvard@gmail.com>
+Date: Tue, 23 Dec 2014 13:13:49 -0300
+Subject: kernel32: Allow empty source in GetStringTypeW.
+
+---
+ dlls/kernel32/locale.c       |  5 +++++
+ dlls/kernel32/tests/locale.c | 10 ++++++++++
+ 2 files changed, 15 insertions(+)
+
+diff --git a/dlls/kernel32/locale.c b/dlls/kernel32/locale.c
+index 1460f7a..30f9048 100644
+--- a/dlls/kernel32/locale.c
++++ b/dlls/kernel32/locale.c
+@@ -2479,6 +2479,11 @@ BOOL WINAPI GetStringTypeW( DWORD type, LPCWSTR src, INT count, LPWORD chartype
+         C2_OTHERNEUTRAL        /* LRE, LRO, RLE, RLO, PDF */
+     };
+ 
++    if (!src) /* Abort and return FALSE when src is null */
++    {
++        SetLastError( ERROR_INVALID_PARAMETER );
++        return FALSE;
++    }
+     if (count == -1) count = strlenW(src) + 1;
+     switch(type)
+     {
+diff --git a/dlls/kernel32/tests/locale.c b/dlls/kernel32/tests/locale.c
+index 65172a7..24b541a 100644
+--- a/dlls/kernel32/tests/locale.c
++++ b/dlls/kernel32/tests/locale.c
+@@ -3281,6 +3281,7 @@ static void test_GetStringTypeW(void)
+ 
+     WORD types[20];
+     WCHAR ch;
++    BOOL res;
+     int i;
+ 
+     memset(types,0,sizeof(types));
+@@ -3338,6 +3339,15 @@ static void test_GetStringTypeW(void)
+     for (i = 0; i < 3; i++)
+         ok(types[i] & C1_SPACE || broken(types[i] == C1_CNTRL) || broken(types[i] == 0), "incorrect types returned for %x -> (%x does not have %x)\n",space_special[i], types[i], C1_SPACE );
+ 
++    for (i = -1; i < 3; i++)
++    {
++        SetLastError(0xdeadbeef);
++        memset(types, 0, sizeof(types));
++        res = GetStringTypeW(CT_CTYPE1, NULL, i, types);
++        ok(!res, "GetStringTypeW unexpectedly succeeded\n");
++        ok(GetLastError() == ERROR_INVALID_PARAMETER, "wrong error, got %u\n", GetLastError());
++    }
++
+     /* surrogate pairs */
+     ch = 0xd800;
+     memset(types, 0, sizeof(types));
+-- 
+2.1.3
+
diff --git a/patches/kernel32-GetStringTypeW/definition b/patches/kernel32-GetStringTypeW/definition
new file mode 100644
index 00000000..22b3e865
--- /dev/null
+++ b/patches/kernel32-GetStringTypeW/definition
@@ -0,0 +1 @@
+Fixes: [37759] Fix access violation when calling GetStringTypeW with NULL src.