diff --git a/packages/preview/theoretic/0.1.1/lib.typ b/packages/preview/theoretic/0.1.1/lib.typ
index c8bbde16f..eb0b68a71 100644
--- a/packages/preview/theoretic/0.1.1/lib.typ
+++ b/packages/preview/theoretic/0.1.1/lib.typ
@@ -611,6 +611,7 @@
   else if content.has("children") { content.children.map(_to-string).join("") }
   else if content.has("child") { _to-string(content.child) }
   else if content.has("body") { _to-string(content.body) }
+  else if content == [] { "" }
   else if content == [ ] { " " }
   else if content.func() == ref { "_ref_" }
   else {