diff --git a/gnu/packages/lisp-xyz.scm b/gnu/packages/lisp-xyz.scm
index 0ed074b766..114a83e966 100644
--- a/gnu/packages/lisp-xyz.scm
+++ b/gnu/packages/lisp-xyz.scm
@@ -603,7 +603,7 @@ (define-public sbcl-clx
     (build-system asdf-build-system/sbcl)
     (native-inputs
      `(("fiasco" ,sbcl-fiasco)))
-    (home-page "http://www.cliki.net/portable-clx")
+    (home-page "https://www.cliki.net/portable-clx")
     (synopsis "X11 client library for Common Lisp")
     (description "CLX is an X11 client library for Common Lisp.  The code was
 originally taken from a CMUCL distribution, was modified somewhat in order to