diff --git a/dh.c b/dh.c
index 657b32da3..a98d39ed5 100644
--- a/dh.c
+++ b/dh.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: dh.c,v 1.68 2018/09/17 15:40:14 millert Exp $ */
+/* $OpenBSD: dh.c,v 1.69 2018/11/09 02:56:22 djm Exp $ */
 /*
  * Copyright (c) 2000 Niels Provos.  All rights reserved.
  *
@@ -406,7 +406,7 @@ dh_new_group16(void)
 DH *
 dh_new_group18(void)
 {
-	static char *gen = "2", *group16 =
+	static char *gen = "2", *group18 =
 	    "FFFFFFFF" "FFFFFFFF" "C90FDAA2" "2168C234" "C4C6628B" "80DC1CD1"
 	    "29024E08" "8A67CC74" "020BBEA6" "3B139B22" "514A0879" "8E3404DD"
 	    "EF9519B3" "CD3A431B" "302B0A6D" "F25F1437" "4FE1356D" "6D51C245"
@@ -451,7 +451,7 @@ dh_new_group18(void)
 	    "9558E447" "5677E9AA" "9E3050E2" "765694DF" "C81F56E8" "80B96E71"
 	    "60C980DD" "98EDD3DF" "FFFFFFFF" "FFFFFFFF";
 
-	return (dh_new_group_asc(gen, group16));
+	return (dh_new_group_asc(gen, group18));
 }
 
 /* Select fallback group used by DH-GEX if moduli file cannot be read. */