diff --git a/Docs/src/ui.but b/Docs/src/ui.but
index d26e2bf9..8c790ceb 100644
--- a/Docs/src/ui.but
+++ b/Docs/src/ui.but
@@ -149,7 +149,7 @@ Sets the installer to silent mode or normal mode. See \R{asilentinstall}{SilentI
 
 \c hwnd show_state
 
-Sets the visibility of a window. Possible show_states are the same as \W{http://msdn.microsoft.com/library/en-us/winui/winui/windowsuserinterface/windowing/windows/windowreference/windowfunctions/showwindow.asp}{Windows ShowWindow} function. SW_* constants are defined in \L{../Include/WinMessages.nsh}{Include\\WinMessages.nsh}.
+Sets the visibility of a window. Possible show_states are the same as \W{http://msdn2.microsoft.com/en-us/library/ms633548}{Windows ShowWindow} function. SW_* constants are defined in \L{../Include/WinMessages.nsh}{Include\\WinMessages.nsh}.
 
 \c !include WinMessages.nsh
 \c GetDlgItem $0 $HWNDPARENT 1