diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index 338f98030a..08b4fcf2b0 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -697,7 +697,8 @@ (define-public ocaml-num
            (lambda* (#:key outputs #:allow-other-keys)
              (format #t "~a~%" (find-files "." ".*.so"))
              (let ((stubdir (string-append (assoc-ref outputs "out")
-                                           "/lib/ocaml/site-lib")))
+                                           "/lib/ocaml/site-lib/stublibs")))
+               (delete-file stubdir)
                (mkdir-p stubdir)
                (install-file "src/dllnums.so" stubdir))
              #t)))))