diff --git a/src/awesomewm.d.tl/generator/snippets.tl b/src/awesomewm.d.tl/generator/snippets.tl
index f284c09..3937aae 100644
--- a/src/awesomewm.d.tl/generator/snippets.tl
+++ b/src/awesomewm.d.tl/generator/snippets.tl
@@ -17,7 +17,7 @@ function snippets.render_typed_variable(name: string, types: List<string>): stri
 
    local tmpl_args = {
       name = name,
-      types = types:concat(", "),
+      types = types:concat(" | "),
    }
 
    return utils.do_or_fail(template.substitute, tmpl, tmpl_args)