diff --git a/src/widgets/osdpretty.cpp b/src/widgets/osdpretty.cpp
index f70ba5bee..55558e52c 100644
--- a/src/widgets/osdpretty.cpp
+++ b/src/widgets/osdpretty.cpp
@@ -98,9 +98,9 @@ OSDPretty::OSDPretty(Mode mode, QWidget *parent)
 #ifdef Q_OS_WIN32
   // Don't show the window in the taskbar.  Qt::ToolTip does this too, but it
   // adds an extra ugly shadow.
-  int ex_style = GetWindowLong(winId(), GWL_EXSTYLE);
+  int ex_style = GetWindowLong((HWND) winId(), GWL_EXSTYLE);
   ex_style |= WS_EX_NOACTIVATE;
-  SetWindowLong(winId(), GWL_EXSTYLE, ex_style);
+  SetWindowLong((HWND) winId(), GWL_EXSTYLE, ex_style);
 #endif
 
   // Mode settings