diff --git a/stemlib/Latin/endtables/basics/decl2.end b/stemlib/Latin/endtables/basics/decl2.end
index ebcbb8c3..4c003e40 100755
--- a/stemlib/Latin/endtables/basics/decl2.end
+++ b/stemlib/Latin/endtables/basics/decl2.end
@@ -5,6 +5,7 @@ um	acc sg masc fem
 um	nom/voc/acc sg neut
 om	acc sg masc fem early
 om	nom/voc/acc sg neut early
+on	acc sg masc poetic
 e	voc sg
 
 i_	nom voc pl masc fem