diff --git a/src/lib/eolian/Eolian.h b/src/lib/eolian/Eolian.h
index b85e408757..4edf1fe50a 100644
--- a/src/lib/eolian/Eolian.h
+++ b/src/lib/eolian/Eolian.h
@@ -1598,7 +1598,6 @@ EAPI Eolian_Value eolian_expression_eval_type(const Eolian_Expression *expr, con
  * it would appear in C (e.g. strings are quoted and escaped).
  *
  * @param[in] v the value.
- * @param[in] etp the eolian type of the value.
  * @return a stringshare containing the literal (quoted and escaped as needed)
  * or NULL.
  *