1 files changed, 4 insertions, 1 deletions

diff --git a/src/w32fns.c b/src/w32fns.c
index 20833978926..7850e20eba1 100644
--- a/src/w32fns.c
+++ b/src/w32fns.c
@@ -3408,7 +3408,10 @@ w32_wnd_proc (hwnd, msg, wParam, lParam)
 
             /* The choice of message is somewhat arbitrary, as long as
                the main thread handler just ignores it. */
-            msg = WM_QUIT;
+            msg = WM_NULL;
+
+            /* Interrupt any blocking system calls.  */
+            signal_quit ();
           }
       }
 #endif