diff --git a/Contrib/System/System.nsh b/Contrib/System/System.nsh
index 439aa03d..a7cbadab 100644
--- a/Contrib/System/System.nsh
+++ b/Contrib/System/System.nsh
@@ -357,24 +357,6 @@
 !define GWL_USERDATA        -21
 !define GWL_ID              -12
 
-; == Show Window ==
-
-!define SW_HIDE             0
-!define SW_SHOWNORMAL       1
-!define SW_NORMAL           1
-!define SW_SHOWMINIMIZED    2
-!define SW_SHOWMAXIMIZED    3
-!define SW_MAXIMIZE         3
-!define SW_SHOWNOACTIVATE   4
-!define SW_SHOW             5
-!define SW_MINIMIZE         6
-!define SW_SHOWMINNOACTIVE  7
-!define SW_SHOWNA           8
-!define SW_RESTORE          9
-!define SW_SHOWDEFAULT      10
-!define SW_FORCEMINIMIZE    11
-!define SW_MAX              11
-
 ; == Window swap ==
 
 !define SWP_NOSIZE          0x0001