diff --git a/oni/packages/emacs.scm b/oni/packages/emacs.scm
index 4ea231a..f8963fc 100644
--- a/oni/packages/emacs.scm
+++ b/oni/packages/emacs.scm
@@ -92,6 +92,7 @@ custom pairs?)")
               (url "https://gitlab.com/matsievskiysv/insert-char-preview")
               (commit commit)))
         (method git-fetch)
+        (file-name (git-file-name name version))
         (sha256
          (base32 "0cqc23y9n63a7kl2p1zrfcsxnclfxcszfmbh2hmbrs6q05ys0kzg"))))
      (build-system emacs-build-system)