diff --git a/reactos/dll/win32/sti/CMakeLists.txt b/reactos/dll/win32/sti/CMakeLists.txt
index aa46801d69b..fab24cc291f 100644
--- a/reactos/dll/win32/sti/CMakeLists.txt
+++ b/reactos/dll/win32/sti/CMakeLists.txt
@@ -11,6 +11,7 @@ spec2def(sti.dll sti.spec)
 list(APPEND SOURCE
     sti.c
     sti_main.c
+    guid.c
     ${CMAKE_CURRENT_BINARY_DIR}/proxy.dlldata.c
     ${CMAKE_CURRENT_BINARY_DIR}/sti_wia_p.c
     ${CMAKE_CURRENT_BINARY_DIR}/sti.def)
diff --git a/reactos/dll/win32/sti/guid.c b/reactos/dll/win32/sti/guid.c
new file mode 100644
index 00000000000..1c276f9817d
--- /dev/null
+++ b/reactos/dll/win32/sti/guid.c
@@ -0,0 +1,14 @@
+/* DO NOT USE THE PRECOMPILED HEADER FOR THIS FILE! */
+
+#include <stdarg.h>
+
+#define WIN32_NO_STATUS
+#define _INC_WINDOWS
+#define COM_NO_WINDOWS_H
+
+#include <windef.h>
+#include <winbase.h>
+#include <initguid.h>
+#include <sti.h>
+
+/* NO CODE HERE, THIS IS JUST REQUIRED FOR THE GUID DEFINITIONS */
diff --git a/reactos/dll/win32/sti/precomp.h b/reactos/dll/win32/sti/precomp.h
new file mode 100644
index 00000000000..8c0b0f6342a
--- /dev/null
+++ b/reactos/dll/win32/sti/precomp.h
@@ -0,0 +1,19 @@
+#ifndef _STI_PCH_
+#define _STI_PCH_
+
+#include <stdarg.h>
+
+#define WIN32_NO_STATUS
+#define _INC_WINDOWS
+#define COM_NO_WINDOWS_H
+
+#define COBJMACROS
+
+#include <windef.h>
+#include <winbase.h>
+#include <sti.h>
+
+#include <wine/debug.h>
+WINE_DEFAULT_DEBUG_CHANNEL(sti);
+
+#endif /* _STI_PCH_ */
diff --git a/reactos/dll/win32/sti/sti.c b/reactos/dll/win32/sti/sti.c
index d326710d328..77f6a9aaa81 100644
--- a/reactos/dll/win32/sti/sti.c
+++ b/reactos/dll/win32/sti/sti.c
@@ -17,26 +17,12 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
-#define WIN32_NO_STATUS
-#define _INC_WINDOWS
-#define COM_NO_WINDOWS_H
+#include "precomp.h"
 
-#include <stdarg.h>
-
-#define COBJMACROS
-
-#include <windef.h>
-#include <winbase.h>
 #include <winreg.h>
-//#include "winerror.h"
-//#include "objbase.h"
-#include <sti.h>
 
-#include <wine/debug.h>
 #include <wine/unicode.h>
 
-WINE_DEFAULT_DEBUG_CHANNEL(sti);
-
 static const WCHAR registeredAppsLaunchPath[] = {
     'S','O','F','T','W','A','R','E','\\',
     'M','i','c','r','o','s','o','f','t','\\',
diff --git a/reactos/dll/win32/sti/sti_main.c b/reactos/dll/win32/sti/sti_main.c
index 2bd3a093b2c..291daebab7d 100644
--- a/reactos/dll/win32/sti/sti_main.c
+++ b/reactos/dll/win32/sti/sti_main.c
@@ -17,26 +17,7 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
-#define WIN32_NO_STATUS
-#define _INC_WINDOWS
-#define COM_NO_WINDOWS_H
-
-#include <stdarg.h>
-
-#define COBJMACROS
-
-#include <windef.h>
-#include <winbase.h>
-//#include "winreg.h"
-//#include "winerror.h"
-//#include "objbase.h"
-#include <initguid.h>
-//#include "wia_lh.h"
-#include <sti.h>
-
-#include <wine/debug.h>
-
-WINE_DEFAULT_DEBUG_CHANNEL(sti);
+#include "precomp.h"
 
 extern HRESULT WINAPI STI_DllGetClassObject(REFCLSID, REFIID, LPVOID *) DECLSPEC_HIDDEN;
 extern BOOL WINAPI STI_DllMain(HINSTANCE, DWORD, LPVOID) DECLSPEC_HIDDEN;