diff --git a/src/test/utils/IGMP.py b/src/test/utils/IGMP.py
index 95ce1ec..64aa27f 100644
--- a/src/test/utils/IGMP.py
+++ b/src/test/utils/IGMP.py
@@ -112,7 +112,7 @@
     def build_leave_msg(self, group = None):
         return self.build_igmp(msg_type = IGMPV3_REPORT, 
                                group = group, 
-                               record_type = IGMP_INCLUDE, 
+                               record_type = IGMP_EXCLUDE, 
                                src_list = [])
 
     def build_ip_igmp(self,