diff --git a/win32ss/include/ntuser.h b/win32ss/include/ntuser.h
index 3770d2761b9..e6db897fa4b 100644
--- a/win32ss/include/ntuser.h
+++ b/win32ss/include/ntuser.h
@@ -3313,7 +3313,7 @@ NtUserSetSystemTimer(
     UINT uElapse,
     TIMERPROC lpTimerFunc);
 
-VOID
+DWORD
 NTAPI
 NtUserSetThreadLayoutHandles(HKL hNewKL, HKL hOldKL);
 
diff --git a/win32ss/user/ntuser/ntstubs.c b/win32ss/user/ntuser/ntstubs.c
index 000fd2bdf5d..226ad3980c5 100644
--- a/win32ss/user/ntuser/ntstubs.c
+++ b/win32ss/user/ntuser/ntstubs.c
@@ -1023,7 +1023,7 @@ Quit:
     return Status;
 }
 
-VOID
+DWORD
 APIENTRY
 NtUserSetThreadLayoutHandles(HKL hNewKL, HKL hOldKL)
 {
@@ -1048,6 +1048,7 @@ NtUserSetThreadLayoutHandles(HKL hNewKL, HKL hOldKL)
 
 Quit:
     UserLeave();
+    return 0;
 }
 
 BOOL