diff --git a/reactos/subsystems/win32/win32k/stubs/stubs.c b/reactos/subsystems/win32/win32k/stubs/stubs.c
index 1604aec0e56..439b4765e53 100644
--- a/reactos/subsystems/win32/win32k/stubs/stubs.c
+++ b/reactos/subsystems/win32/win32k/stubs/stubs.c
@@ -902,6 +902,19 @@ EngQueryDeviceAttribute(
    return FALSE;
 }
 
+/*
+ * @unimplemented
+ */
+LARGE_INTEGER
+APIENTRY
+EngQueryFileTimeStamp(IN LPWSTR FileName)
+{
+   LARGE_INTEGER FileTime;
+   FileTime.QuadPart = 0;
+   UNIMPLEMENTED;
+   return FileTime;
+}
+
 /*
  * @unimplemented
  */
diff --git a/reactos/subsystems/win32/win32k/win32k.def b/reactos/subsystems/win32/win32k/win32k.def
index cb5a65d2f8b..f9819c0704b 100644
--- a/reactos/subsystems/win32/win32k/win32k.def
+++ b/reactos/subsystems/win32/win32k/win32k.def
@@ -96,6 +96,7 @@ EngLockDriverObj@4
 EngLockSurface@4
 EngLpkInstalled@0
 EngMapEvent@20
+EngMapFile@12
 EngMapFontFile@12
 EngMapFontFileFD@12
 EngMapModule@8
@@ -112,6 +113,7 @@ EngPlgBlt@44
 EngProbeForRead@12=NTOSKRNL.ProbeForRead
 EngProbeForReadAndWrite@12=NTOSKRNL.ProbeForWrite
 EngQueryDeviceAttribute@24
+EngQueryFileTimeStamp@4
 EngQueryLocalTime@4
 EngQueryPalette@16
 EngQueryPerformanceCounter@4
@@ -139,8 +141,8 @@ EngUnloadImage@4
 EngUnlockDirectDrawSurface@4
 EngUnlockDriverObj@4
 EngUnlockSurface@4
-EngUnmapFile@4
 EngUnmapEvent@4
+EngUnmapFile@4
 EngUnmapFontFile@4
 EngUnmapFontFileFD@4
 EngUnsecureMem@4