diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index 0594d587ef..33acbbec4e 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -1356,6 +1356,7 @@ (define-public ocaml-migrate-parsetree
        (uri (git-reference
              (url (string-append home-page ".git"))
              (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
        (sha256
         (base32
          "16kas19iwm4afijv3yxd250s08absabmdcb4yj57wc8r4fmzv5dm"))))