diff --git a/gnu/packages/xdisorg.scm b/gnu/packages/xdisorg.scm
index 41199237bd..83fefecedc 100644
--- a/gnu/packages/xdisorg.scm
+++ b/gnu/packages/xdisorg.scm
@@ -1142,6 +1142,7 @@ (define-public rxvt-unicode
                #t))))))
     (inputs
      `(("libXft" ,libxft)
+       ("libX11" ,libx11)
        ("libXt" ,libxt)))
     (native-inputs
      `(("ncurses" ,ncurses)         ;trigger the installation of terminfo data