diff --git a/tools/test/bin/onos-config b/tools/test/bin/onos-config
index d8bc8c2..35232bd 100755
--- a/tools/test/bin/onos-config
+++ b/tools/test/bin/onos-config
@@ -31,6 +31,9 @@
     echo "log4j.logger.net.kuujo.copycat= INFO" \
         >> $ONOS_INSTALL_DIR/$KARAF_DIST/etc/org.ops4j.pax.logging.cfg
 
+    # Suppress Hazelcast multicast joiner warning
+    echo "log4j.logger.com.hazelcast.cluster.impl.MulticastService= ERROR" \
+        >> $ONOS_INSTALL_DIR/$KARAF_DIST/etc/org.ops4j.pax.logging.cfg
 "
 
 # Generate a default tablets.json from the ON* environment variables