diff --git a/build_tarballs.jl b/build_tarballs.jl
index c42eecd..a30759b 100644
--- a/build_tarballs.jl
+++ b/build_tarballs.jl
@@ -130,7 +130,8 @@ if !isempty(get(ENV,"TRAVIS_TAG",""))
     repo_name = ENV["TRAVIS_REPO_SLUG"]
     tag_name = ENV["TRAVIS_TAG"]
     product_hashes = product_hashes_from_github_release(repo_name, tag_name; verbose=verbose)
-    print_buildjl(pwd(), products, product_hashes,
+    dummy_prefix = Prefix(pwd())
+    print_buildjl(pwd(), products(dummy_prefix), product_hashes,
         "https://github.com/quinnj/DecFPBuilder/releases/download/$(ENV["TRAVIS_TAG"])")
 end