diff --git a/reactos/lib/epsapi/CMakeLists.txt b/reactos/lib/epsapi/CMakeLists.txt
index 4eb87dfe28a..bbbeb7dd8b5 100644
--- a/reactos/lib/epsapi/CMakeLists.txt
+++ b/reactos/lib/epsapi/CMakeLists.txt
@@ -4,5 +4,5 @@ add_library(epsapi
     enum/modules.c
     enum/processes.c)
 
+add_pch(epsapi enum/precomp.h)
 add_dependencies(epsapi psdk)
-
diff --git a/reactos/lib/epsapi/enum/drivers.c b/reactos/lib/epsapi/enum/drivers.c
index 179b698f15d..961628da76e 100644
--- a/reactos/lib/epsapi/enum/drivers.c
+++ b/reactos/lib/epsapi/enum/drivers.c
@@ -14,16 +14,11 @@
  *                          and improve reusability
  */
 
-#define WIN32_NO_STATUS
-#include <windows.h>
-#define NTOS_MODE_USER
-#include <ndk/ntndk.h>
+#include "precomp.h"
 
 #define NDEBUG
 #include <debug.h>
 
-#include <epsapi/epsapi.h>
-
 NTSTATUS NTAPI
 PsaEnumerateSystemModules(IN PSYSMOD_ENUM_ROUTINE Callback,
                           IN OUT PVOID CallbackContext)
diff --git a/reactos/lib/epsapi/enum/modules.c b/reactos/lib/epsapi/enum/modules.c
index 55915ee594e..f5a3d73d479 100644
--- a/reactos/lib/epsapi/enum/modules.c
+++ b/reactos/lib/epsapi/enum/modules.c
@@ -18,16 +18,12 @@
  *                          isolated in its own library to clear the confusion
  *                          and improve reusability
  */
-#define WIN32_NO_STATUS
-#include <windows.h>
-#define NTOS_MODE_USER
-#include <ndk/ntndk.h>
+
+#include "precomp.h"
 
 #define NDEBUG
 #include <debug.h>
 
-#include <epsapi/epsapi.h>
-
 NTSTATUS NTAPI
 PsaEnumerateProcessModules(IN HANDLE ProcessHandle,
                            IN PPROCMOD_ENUM_ROUTINE Callback,
diff --git a/reactos/lib/epsapi/enum/precomp.h b/reactos/lib/epsapi/enum/precomp.h
new file mode 100644
index 00000000000..d53731b1571
--- /dev/null
+++ b/reactos/lib/epsapi/enum/precomp.h
@@ -0,0 +1,6 @@
+#define WIN32_NO_STATUS
+#include <windows.h>
+#define NTOS_MODE_USER
+#include <ndk/ntndk.h>
+
+#include <epsapi/epsapi.h>
diff --git a/reactos/lib/epsapi/enum/processes.c b/reactos/lib/epsapi/enum/processes.c
index 45ebb595b1e..3d772d0b5d1 100644
--- a/reactos/lib/epsapi/enum/processes.c
+++ b/reactos/lib/epsapi/enum/processes.c
@@ -30,12 +30,8 @@
  *                          isolated in its own library to clear the confusion
  *                          and improve reusability
  */
-#define WIN32_NO_STATUS
-#include <windows.h>
-#define NTOS_MODE_USER
-#include <ndk/ntndk.h>
 
-#include <epsapi/epsapi.h>
+#include "precomp.h"
 
 #define NDEBUG
 #include <debug.h>
diff --git a/reactos/lib/epsapi/epsapi.rbuild b/reactos/lib/epsapi/epsapi.rbuild
index 787b7161f41..2a6e273e6db 100644
--- a/reactos/lib/epsapi/epsapi.rbuild
+++ b/reactos/lib/epsapi/epsapi.rbuild
@@ -5,5 +5,6 @@
 		<file>drivers.c</file>
 		<file>modules.c</file>
 		<file>processes.c</file>
+		<pch>precomp.h</pch>
 	</directory>
 </module>