diff --git a/patches/ntoskrnl-Stubs/0012-ntoskrnl.exe-Add-IoStopTimer-stub.patch b/patches/ntoskrnl-Stubs/0012-ntoskrnl.exe-Add-IoStopTimer-stub.patch
new file mode 100644
index 00000000..800ef1ed
--- /dev/null
+++ b/patches/ntoskrnl-Stubs/0012-ntoskrnl.exe-Add-IoStopTimer-stub.patch
@@ -0,0 +1,51 @@
+From 36c47ef4d1227db3ac19e0328cbe038cd172df95 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Michael=20M=C3=BCller?= <michael@fds-team.de>
+Date: Sun, 29 May 2016 15:33:58 +0200
+Subject: ntoskrnl.exe: Add IoStopTimer stub.
+
+---
+ dlls/ntoskrnl.exe/ntoskrnl.c        | 13 +++++++++++--
+ dlls/ntoskrnl.exe/ntoskrnl.exe.spec |  2 +-
+ 2 files changed, 12 insertions(+), 3 deletions(-)
+
+diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
+index a52b5df..97a054b 100644
+--- a/dlls/ntoskrnl.exe/ntoskrnl.c
++++ b/dlls/ntoskrnl.exe/ntoskrnl.c
+@@ -579,9 +579,18 @@ NTSTATUS WINAPI IoInitializeTimer(PDEVICE_OBJECT DeviceObject,
+ /***********************************************************************
+  *           IoStartTimer   (NTOSKRNL.EXE.@)
+  */
+-void WINAPI IoStartTimer(PDEVICE_OBJECT DeviceObject)
++void WINAPI IoStartTimer( DEVICE_OBJECT *dev )
+ {
+-    FIXME( "stub: %p\n", DeviceObject );
++    FIXME( "stub: %p\n", dev );
++}
++
++
++/***********************************************************************
++ *           IoStopTimer   (NTOSKRNL.EXE.@)
++ */
++void WINAPI IoStopTimer( DEVICE_OBJECT *dev )
++{
++    FIXME( "stub: %p\n", dev );
+ }
+ 
+ 
+diff --git a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
+index b688a3f..1fb6f56 100644
+--- a/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
++++ b/dlls/ntoskrnl.exe/ntoskrnl.exe.spec
+@@ -463,7 +463,7 @@
+ @ stub IoStartPacket
+ @ stdcall IoStartTimer(ptr)
+ @ stub IoStatisticsLock
+-@ stub IoStopTimer
++@ stdcall IoStopTimer(ptr)
+ @ stub IoSynchronousInvalidateDeviceRelations
+ @ stub IoSynchronousPageWrite
+ @ stub IoThreadToProcess
+-- 
+2.8.0
+
diff --git a/patches/ntoskrnl-Stubs/definition b/patches/ntoskrnl-Stubs/definition
index 7f89e34c..495eeaa5 100644
--- a/patches/ntoskrnl-Stubs/definition
+++ b/patches/ntoskrnl-Stubs/definition
@@ -9,3 +9,4 @@ Fixes: Add stub for ntoskrnl.ExDeleteResourceLite
 Fixes: Add stub for ntoskrnl.Mm{Map,Unmap}LockedPages
 Fixes: Implement ntoskrnl.KeInitializeMutex
 Fixes: Add stub for ntoskrnl.IoGetDeviceAttachmentBaseRef
+Fixes: Add stub for ntoskrnl.IoStopTimer
diff --git a/patches/patchinstall.sh b/patches/patchinstall.sh
index b9c53229..5e833fb2 100755
--- a/patches/patchinstall.sh
+++ b/patches/patchinstall.sh
@@ -5518,6 +5518,7 @@ if test "$enable_ntoskrnl_Stubs" -eq 1; then
 	patch_apply ntoskrnl-Stubs/0009-ntoskrnl.exe-Implement-MmMapLockedPages-and-MmUnmapL.patch
 	patch_apply ntoskrnl-Stubs/0010-ntoskrnl.exe-Implement-KeInitializeMutex.patch
 	patch_apply ntoskrnl-Stubs/0011-ntoskrnl.exe-Add-IoGetDeviceAttachmentBaseRef-stub.patch
+	patch_apply ntoskrnl-Stubs/0012-ntoskrnl.exe-Add-IoStopTimer-stub.patch
 	(
 		echo '+    { "Austin English", "ntoskrnl.exe: Add KeWaitForMultipleObjects stub.", 1 },';
 		echo '+    { "Alexander Morozov", "ntoskrnl.exe: Add stub for IoGetAttachedDeviceReference.", 1 },';
@@ -5530,6 +5531,7 @@ if test "$enable_ntoskrnl_Stubs" -eq 1; then
 		echo '+    { "Christian Costa", "ntoskrnl.exe: Implement MmMapLockedPages and MmUnmapLockedPages.", 1 },';
 		echo '+    { "Alexander Morozov", "ntoskrnl.exe: Implement KeInitializeMutex.", 1 },';
 		echo '+    { "Jarkko Korpi", "ntoskrnl.exe: Add IoGetDeviceAttachmentBaseRef stub.", 1 },';
+		echo '+    { "Michael Müller", "ntoskrnl.exe: Add IoStopTimer stub.", 1 },';
 	) >> "$patchlist"
 fi