diff --git a/man/XConfigureWindow.man b/man/XConfigureWindow.man
index d3e9f317..4043cfa0 100644
--- a/man/XConfigureWindow.man
+++ b/man/XConfigureWindow.man
@@ -148,7 +148,7 @@
 XConfigureWindow, XMoveWindow, XResizeWindow, XMoveResizeWindow, XSetWindowBorderWidth, XWindowChanges \- configure windows and window changes structure
 .SH SYNTAX
 .HP
-int XConfigureWindow\^(\^Display *\fIdisplay\fP\^, Window \fIw\fP\^, unsigned \fIvalue_mask\fP\^);
+int XConfigureWindow\^(\^Display *\fIdisplay\fP\^, Window \fIw\fP\^, unsigned \fIvalue_mask\fP\^, \^XWindowChanges *\fIchanges\fP\^);
 .HP
 int XMoveWindow\^(\^Display *\fIdisplay\fP\^, Window \fIw\fP\^, int \fIx\fP\^, \fIy\fP\^);
 .HP