diff --git a/reactos/include/ndk/rtlfuncs.h b/reactos/include/ndk/rtlfuncs.h
index ef391931dd6..01c4f96ea7e 100644
--- a/reactos/include/ndk/rtlfuncs.h
+++ b/reactos/include/ndk/rtlfuncs.h
@@ -1484,6 +1484,10 @@ RtlEnlargedUnsignedMultiply(
     ULONG Multiplier
 );
     
+ULONG 
+STDCALL
+RtlUniform(PULONG Seed);
+
 /*
  * Time Functions
  */
diff --git a/reactos/lib/syssetup/install.c b/reactos/lib/syssetup/install.c
index 20c0c520432..788b4cc2622 100644
--- a/reactos/lib/syssetup/install.c
+++ b/reactos/lib/syssetup/install.c
@@ -27,8 +27,10 @@
 
 /* INCLUDES *****************************************************************/
 
-#include <ntos.h>
 #include <windows.h>
+#define NTOS_MODE_USER
+#include <ndk/ntndk.h>
+
 #include <commctrl.h>
 #include <stdio.h>
 #include <tchar.h>
diff --git a/reactos/lib/syssetup/logfile.c b/reactos/lib/syssetup/logfile.c
index a4ca90fb970..df622a10675 100644
--- a/reactos/lib/syssetup/logfile.c
+++ b/reactos/lib/syssetup/logfile.c
@@ -28,9 +28,8 @@
 /* INCLUDES *****************************************************************/
 
 #include <windows.h>
-#include <ntos.h>
-#include <string.h>
-#include <tchar.h>
+#define NTOS_MODE_USER
+#include <ndk/ntndk.h>
 
 #include <syssetup.h>