diff --git a/gnu/packages/xdisorg.scm b/gnu/packages/xdisorg.scm
index 8feea6bf924..83fefecedc4 100644
--- a/gnu/packages/xdisorg.scm
+++ b/gnu/packages/xdisorg.scm
@@ -1142,7 +1142,8 @@ compact configuration syntax.")
                #t))))))
     (inputs
      `(("libXft" ,libxft)
-       ("libX11" ,libx11)))
+       ("libX11" ,libx11)
+       ("libXt" ,libxt)))
     (native-inputs
      `(("ncurses" ,ncurses)         ;trigger the installation of terminfo data
        ("perl" ,perl)