diff --git a/bin/list-all b/bin/list-all
index 843cd07..f208cd0 100755
--- a/bin/list-all
+++ b/bin/list-all
@@ -4,7 +4,7 @@ list_all() {
   local tmp_download_dir="$(mktemp -d -t asdf-python.XXX)"
   download_python_build $tmp_download_dir > /dev/null 2>&1
   local python_build="$tmp_download_dir/pyenv/plugins/python-build/bin/python-build"
-  $python_build --definitions
+  $python_build --definitions | tr '\n' ' '
   rm -rf "$tmp_download_dir"
 }