diff --git a/lib/windows/winlean.nim b/lib/windows/winlean.nim
index 5e899dd1af..a08a067fa8 100644
--- a/lib/windows/winlean.nim
+++ b/lib/windows/winlean.nim
@@ -769,7 +769,7 @@ proc getQueuedCompletionStatus*(CompletionPort: Handle,
                                 dwMilliseconds: DWORD): WINBOOL{.stdcall,
     dynlib: "kernel32", importc: "GetQueuedCompletionStatus".}
 
-proc getOverlappedResult*(hFile: Handle, lpOverlapped: OVERLAPPED,
+proc getOverlappedResult*(hFile: Handle, lpOverlapped: POVERLAPPED,
               lpNumberOfBytesTransferred: var DWORD, bWait: WINBOOL): WINBOOL{.
     stdcall, dynlib: "kernel32", importc: "GetOverlappedResult".}