diff --git a/reactos/ntoskrnl/ntoskrnl.spec b/reactos/ntoskrnl/ntoskrnl.spec
index f024e7fda2e..9a37277f072 100644
--- a/reactos/ntoskrnl/ntoskrnl.spec
+++ b/reactos/ntoskrnl/ntoskrnl.spec
@@ -969,7 +969,7 @@
 @ stdcall PsGetCurrentThreadStackLimit()
 @ stdcall PsGetCurrentThreadTeb()
 @ stdcall PsGetCurrentThreadWin32Thread()
-;PsGetCurrentThreadWin32ThreadAndEnterCriticalRegion
+@ stdcall PsGetCurrentThreadWin32ThreadAndEnterCriticalRegion()
 @ stdcall PsGetJobLock(ptr)
 @ stdcall PsGetJobSessionId(ptr)
 @ stdcall PsGetJobUIRestrictionsClass(ptr)
diff --git a/reactos/ntoskrnl/ps/thread.c b/reactos/ntoskrnl/ps/thread.c
index 07e8f99e85c..8d6f08d8e69 100644
--- a/reactos/ntoskrnl/ps/thread.c
+++ b/reactos/ntoskrnl/ps/thread.c
@@ -796,6 +796,17 @@ PsGetCurrentThreadWin32Thread(VOID)
     return PsGetCurrentThread()->Tcb.Win32Thread;
 }
 
+/*
+ * @implemented
+ */
+PVOID
+NTAPI
+PsGetCurrentThreadWin32ThreadAndEnterCriticalRegion(VOID)
+{
+    KeEnterCriticalRegion();
+    return PsGetCurrentThread()->Tcb.Win32Thread;
+}
+
 /*
  * @implemented
  */