diff --git a/lib/asn1/gen.c b/lib/asn1/gen.c
index 52fd0d393..be4a91fee 100644
--- a/lib/asn1/gen.c
+++ b/lib/asn1/gen.c
@@ -340,6 +340,8 @@ generate_constant (const Symbol *s)
 		 "}\n\n",
 		 s->gen_name, s->gen_name);
 
+	free(list);
+
 	close_codefile();
 
 	break;