diff --git a/mcastmngr/files/common/lib/mcast/common.sh b/mcastmngr/files/common/lib/mcast/common.sh
index d3063152d..e0bf2214f 100755
--- a/mcastmngr/files/common/lib/mcast/common.sh
+++ b/mcastmngr/files/common/lib/mcast/common.sh
@@ -62,7 +62,7 @@ read_snooping() {
 	local proto
 
 	config_get sec_enable "$config" enable 0
-	config_get proto "$config" proto
+	config_get proto "$config" proto "igmp"
 
 	if [ "$sec_enable" == "0" ]; then
 		return
@@ -103,7 +103,7 @@ read_proxy() {
 	local proto
 
 	config_get sec_enable "$config" enable 0
-	config_get proto "$config" proto
+	config_get proto "$config" proto "igmp"
 
 	if [ "$sec_enable" == "0" ]; then
 		return