diff --git a/scheduler/thread.c b/scheduler/thread.c
index 09b9288..ab26e71 100644
--- a/scheduler/thread.c
+++ b/scheduler/thread.c
@@ -337,7 +337,7 @@
     HeapFree( GetProcessHeap(), 0, threadArgs );
 
     ((LPDWORD)CURRENT_STACK16)[-1] = param;
-    return wine_call_to_16_long( start, sizeof(DWORD) );
+    return wine_call_to_16( start, sizeof(DWORD) );
 }
 HANDLE WINAPI CreateThread16( SECURITY_ATTRIBUTES *sa, DWORD stack,
                               FARPROC16 start, SEGPTR param,