diff --git a/sdk/include/psdk/winbase.h b/sdk/include/psdk/winbase.h
index a1adf48268c..cd7446c5c4c 100644
--- a/sdk/include/psdk/winbase.h
+++ b/sdk/include/psdk/winbase.h
@@ -792,6 +792,13 @@ typedef struct _OVERLAPPED {
 	HANDLE hEvent;
 } OVERLAPPED, *POVERLAPPED, *LPOVERLAPPED;
 
+typedef struct _OVERLAPPED_ENTRY {
+    ULONG_PTR lpCompletionKey;
+    LPOVERLAPPED lpOverlapped;
+    ULONG_PTR Internal;
+    DWORD dwNumberOfBytesTransferred;
+} OVERLAPPED_ENTRY, *LPOVERLAPPED_ENTRY;
+
 typedef struct _STARTUPINFOA {
 	DWORD	cb;
 	LPSTR	lpReserved;