diff --git a/dll/cpl/timedate/clock.c b/dll/cpl/timedate/clock.c
index ebf9e8df2d2..3fb30f6d8b8 100644
--- a/dll/cpl/timedate/clock.c
+++ b/dll/cpl/timedate/clock.c
@@ -163,6 +163,7 @@ ClockWndProc(HWND hwnd,
             pClockData->cyClient = HIWORD(lParam);
             break;
 
+        case WM_TIMECHANGE:
         case WM_TIMER:
             GetLocalTime(&pClockData->stCurrent);
             InvalidateRect(hwnd, NULL, FALSE);