diff --git a/package/network/ipv6/map/Makefile b/package/network/ipv6/map/Makefile
index cfb7c4ac357..10dbe97b488 100644
--- a/package/network/ipv6/map/Makefile
+++ b/package/network/ipv6/map/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=map
 PKG_VERSION:=4
-PKG_RELEASE:=11
+PKG_RELEASE:=12
 PKG_LICENSE:=GPL-2.0
 
 include $(INCLUDE_DIR)/package.mk
diff --git a/package/network/ipv6/map/files/map.sh b/package/network/ipv6/map/files/map.sh
index 5f4add36eb8..70dc72326c4 100755
--- a/package/network/ipv6/map/files/map.sh
+++ b/package/network/ipv6/map/files/map.sh
@@ -85,7 +85,7 @@ proto_map_setup() {
 		json_add_string remote $(eval "echo \$RULE_${k}_BR")
 		json_add_string link $(eval "echo \$RULE_${k}_PD6IFACE")
 		json_add_object "data"
-			json_add_string encaplimit "${encaplimit:-4}"
+			[ -n "$encaplimit" ] && json_add_string encaplimit "$encaplimit"
 			if [ "$type" = "map-e" ]; then
 				json_add_array "fmrs"
 				for i in $(seq $RULE_COUNT); do