diff --git a/dll/shellext/stobject/CMakeLists.txt b/dll/shellext/stobject/CMakeLists.txt
index 341fe672ae2..e25e433f6f0 100644
--- a/dll/shellext/stobject/CMakeLists.txt
+++ b/dll/shellext/stobject/CMakeLists.txt
@@ -20,13 +20,17 @@ spec2def(stobject.dll stobject.spec)
 file(GLOB_RECURSE stobject_rc_deps resources/*.*)
 add_rc_deps(stobject.rc ${stobject_rc_deps})
 
-add_library(stobject SHARED
+list(APPEND SOURCE
     csystray.cpp
     stobject.cpp
-    stobject.rc
     hotplug.cpp
     power.cpp
     volume.cpp
+    precomp.h)
+
+add_library(stobject SHARED
+    ${SOURCE}
+    stobject.rc
     ${CMAKE_CURRENT_BINARY_DIR}/stobject.def)
 
 set_module_type(stobject win32dll UNICODE)
@@ -48,4 +52,5 @@ add_importlibs(stobject
     kernel32
     ntdll)
 
+add_pch(stobject precomp.h SOURCE)
 add_cd_file(TARGET stobject DESTINATION reactos/system32 FOR all)
diff --git a/dll/shellext/stobject/csystray.cpp b/dll/shellext/stobject/csystray.cpp
index e4a2afe4035..89bd5c5ac03 100644
--- a/dll/shellext/stobject/csystray.cpp
+++ b/dll/shellext/stobject/csystray.cpp
@@ -9,7 +9,8 @@
 
 #include "precomp.h"
 
-WINE_DEFAULT_DEBUG_CHANNEL(stobject);
+#include <undocshell.h>
+#include <shellutils.h>
 
 SysTrayIconHandlers_t g_IconHandlers [] = {
         { Volume_Init, Volume_Shutdown, Volume_Update, Volume_Message },
diff --git a/dll/shellext/stobject/csystray.h b/dll/shellext/stobject/csystray.h
index b95cd65577f..214a4c65492 100644
--- a/dll/shellext/stobject/csystray.h
+++ b/dll/shellext/stobject/csystray.h
@@ -7,6 +7,7 @@
  *              David Quintana <gigaherz@gmail.com>
  *              Shriraj Sawant a.k.a SR13 <sr.official@hotmail.com>
  */
+
 #pragma once
 
 extern const GUID CLSID_SysTray;
diff --git a/dll/shellext/stobject/hotplug.cpp b/dll/shellext/stobject/hotplug.cpp
index 4b17a1baf27..5c6d3099a80 100644
--- a/dll/shellext/stobject/hotplug.cpp
+++ b/dll/shellext/stobject/hotplug.cpp
@@ -5,17 +5,14 @@
  * PURPOSE:     Removable devices notification icon handler
  * PROGRAMMERS: Shriraj Sawant a.k.a SR13 <sr.official@hotmail.com> 
  */
-#include <windows.h>
+
 #include "precomp.h"
-#include <mmsystem.h>
-#include <mmddk.h>
-#include <atlstr.h>
+
 #include <atlsimpcoll.h>
 #include <dbt.h>
-#include <setupapi.h>
 #include <cfgmgr32.h>
+#include <shlwapi.h>
 
-WINE_DEFAULT_DEBUG_CHANNEL(stobject);
 #define DISPLAY_NAME_LEN 40
 
 //BOOL WINAPI UnregisterDeviceNotification(HDEVNOTIFY Handle);
diff --git a/dll/shellext/stobject/power.cpp b/dll/shellext/stobject/power.cpp
index a25de28cfbe..12382faf7d5 100644
--- a/dll/shellext/stobject/power.cpp
+++ b/dll/shellext/stobject/power.cpp
@@ -8,23 +8,17 @@
  *              David Quintana <gigaherz@gmail.com>
  */
 
-#include <windows.h>
-#include <setupapi.h>
-#include <devguid.h>
-#include <batclass.h> 
-
 #include "precomp.h"
-#include "powrprof.h"
 
-#include <mmsystem.h>
-#include <mmddk.h>
-#include <atlstr.h>
+#include <devguid.h>
+#include <winioctl.h>
+#include <powrprof.h>
+#include <windows.h>
+#include <batclass.h>
 
 #define GBS_HASBATTERY 0x1
 #define GBS_ONBATTERY  0x2
 
-WINE_DEFAULT_DEBUG_CHANNEL(stobject);
-
 int br_icons[5] = { IDI_BATTCAP0, IDI_BATTCAP1, IDI_BATTCAP2, IDI_BATTCAP3, IDI_BATTCAP4 }; // battery mode icons.
 int bc_icons[5] = { IDI_BATTCHA0, IDI_BATTCHA1, IDI_BATTCHA2, IDI_BATTCHA3, IDI_BATTCHA4 }; // charging mode icons.
 
diff --git a/dll/shellext/stobject/precomp.h b/dll/shellext/stobject/precomp.h
index 64824ba8254..cefd8ea16e0 100644
--- a/dll/shellext/stobject/precomp.h
+++ b/dll/shellext/stobject/precomp.h
@@ -1,4 +1,5 @@
-#pragma once
+#ifndef _STOBJECT_PRECOMP_H_
+#define _STOBJECT_PRECOMP_H_
 
 #define WIN32_NO_STATUS
 #include <stdarg.h>
@@ -12,27 +13,18 @@
 
 #include <windef.h>
 #include <winbase.h>
-#include <winreg.h>
-#include <winuser.h>
-#include <wincon.h>
-#include <ddeml.h>
 #include <shlguid_undoc.h>
-#include <shlwapi.h>
 #include <shlobj.h>
-#include <shlobj_undoc.h>
-#include <shlwapi_undoc.h>
-#include <tchar.h>
 #include <strsafe.h>
 #include <atlbase.h>
 #include <atlcom.h>
 #include <atlwin.h>
-#include <undocshell.h>
-#include <shellutils.h>
-
+#include <atlstr.h>
+#include <setupapi.h>
 #include <shellapi.h>
 
 #include <wine/debug.h>
-#include <wine/unicode.h>
+WINE_DEFAULT_DEBUG_CHANNEL(stobject);
 
 #include "resource.h"
 
@@ -82,4 +74,6 @@ extern HRESULT STDMETHODCALLTYPE Power_Message(_In_ CSysTray * pSysTray, UINT uM
 
 #define POWER_TIMER_ID   2
 #define VOLUME_TIMER_ID  3
-#define HOTPLUG_TIMER_ID 4
\ No newline at end of file
+#define HOTPLUG_TIMER_ID 4
+
+#endif /* _STOBJECT_PRECOMP_H_ */
diff --git a/dll/shellext/stobject/stobject.cpp b/dll/shellext/stobject/stobject.cpp
index 3b0683bbe1f..455bf70ef96 100644
--- a/dll/shellext/stobject/stobject.cpp
+++ b/dll/shellext/stobject/stobject.cpp
@@ -9,9 +9,6 @@
 
 #include "precomp.h"
 
-#include <olectl.h>
-#include <atlwin.h>
-
 BEGIN_OBJECT_MAP(ObjectMap)
     OBJECT_ENTRY(CLSID_SysTray, CSysTray)
 END_OBJECT_MAP()
diff --git a/dll/shellext/stobject/volume.cpp b/dll/shellext/stobject/volume.cpp
index b7cb3ff049c..a78bda743b6 100644
--- a/dll/shellext/stobject/volume.cpp
+++ b/dll/shellext/stobject/volume.cpp
@@ -8,11 +8,8 @@
 
 #include "precomp.h"
 
-#include <mmsystem.h>
 #include <mmddk.h>
 
-WINE_DEFAULT_DEBUG_CHANNEL(stobject);
-
 HICON g_hIconVolume;
 HICON g_hIconMute;