diff --git a/pimd/pim_igmp.h b/pimd/pim_igmp.h
index 656147f..95e60bf 100644
--- a/pimd/pim_igmp.h
+++ b/pimd/pim_igmp.h
@@ -55,13 +55,16 @@
 #define IGMP_V3_GROUP_RECORD_SOURCE_OFFSET     (8)
 
 /* RFC 3376: 8.1. Robustness Variable - Default: 2 */
-#define IGMP_DEFAULT_ROBUSTNESS_VARIABLE  (2)
+#define IGMP_DEFAULT_ROBUSTNESS_VARIABLE           (2)
 
 /* RFC 3376: 8.2. Query Interval - Default: 125 seconds */
-#define IGMP_GENERAL_QUERY_INTERVAL       (125)
+#define IGMP_GENERAL_QUERY_INTERVAL                (125)
 
 /* RFC 3376: 8.3. Query Response Interval - Default: 100 deciseconds */
-#define IGMP_QUERY_MAX_RESPONSE_TIME_DSEC (100)
+#define IGMP_QUERY_MAX_RESPONSE_TIME_DSEC          (100)
+
+/* RFC 3376: 8.8. Last Member Query Interval - Default: 10 deciseconds */
+#define IGMP_SPECIFIC_QUERY_MAX_RESPONSE_TIME_DSEC (10)
 
 struct igmp_join {
   struct in_addr group_addr;