diff --git a/reactos/dll/win32/user32/controls/listbox.c b/reactos/dll/win32/user32/controls/listbox.c
index f74bba65574..c26328d73d0 100644
--- a/reactos/dll/win32/user32/controls/listbox.c
+++ b/reactos/dll/win32/user32/controls/listbox.c
@@ -2696,7 +2696,7 @@ static LRESULT WINAPI ListBoxWndProc_common( HWND hwnd, UINT msg,
     }
     if (descr->style & LBS_COMBOBOX) lphc = descr->lphc;
 
-    TRACE("[%p]: msg %s wp %08x lp %08lx\n",
+    TRACE("[%p]: msg %s wp %08lx lp %08lx\n",
           hwnd, SPY_GetMsgName(msg, hwnd), wParam, lParam );
 
     switch(msg)