diff --git a/net/ntp-rc/Makefile b/net/ntp-rc/Makefile
index 311c09230134..9316610c8437 100644
--- a/net/ntp-rc/Makefile
+++ b/net/ntp-rc/Makefile
@@ -52,6 +52,10 @@ CONFIGURE_ARGS+=	--with-openssl-incdir=${OPENSSLINC} \
 PLIST_SUB+=		SSL=""
 .endif
 
+.if !defined(DISABLE_IPV6)
+CONFIGURE_ARGS+=        --enable-ipv6
+.endif
+
 .for D in ${NTP_DRIVERS}
 .if defined(WITH_${D})
 CONFIGURE_ARGS+=	--enable-${D}
diff --git a/net/ntp/Makefile b/net/ntp/Makefile
index c45dae66ebcb..fe28885925bd 100644
--- a/net/ntp/Makefile
+++ b/net/ntp/Makefile
@@ -52,6 +52,10 @@ CONFIGURE_ARGS+=	--with-openssl-incdir=${OPENSSLINC} \
 PLIST_SUB+=		SSL=""
 .endif
 
+.if !defined(DISABLE_IPV6)
+CONFIGURE_ARGS+=        --enable-ipv6
+.endif
+
 .for D in ${NTP_DRIVERS}
 .if defined(WITH_${D})
 CONFIGURE_ARGS+=	--enable-${D}