diff --git a/lib/MySQL_HostGroups_Manager.cpp b/lib/MySQL_HostGroups_Manager.cpp
index 84ce70b65..3b3b4e9b0 100644
--- a/lib/MySQL_HostGroups_Manager.cpp
+++ b/lib/MySQL_HostGroups_Manager.cpp
@@ -337,6 +337,7 @@ MySQL_HostGroups_Manager::MySQL_HostGroups_Manager() {
 	status.server_connections_connected=0;
 	status.server_connections_aborted=0;
 	status.server_connections_created=0;
+	status.server_connections_delayed=0;
 	status.servers_table_version=0;
 	pthread_mutex_init(&status.servers_table_version_lock, NULL);
 	pthread_cond_init(&status.servers_table_version_cond, NULL);
diff --git a/lib/ProxySQL_Cluster.cpp b/lib/ProxySQL_Cluster.cpp
index 5b3c0d95b..77c8159eb 100644
--- a/lib/ProxySQL_Cluster.cpp
+++ b/lib/ProxySQL_Cluster.cpp
@@ -167,6 +167,7 @@ void * ProxySQL_Cluster_Monitor_thread(void *args) {
 				}
 				if (conn->net.vio) { 
 					mysql_close(conn);
+					conn = NULL;
 				}
 			} else {
 				proxy_warning("Cluster: unable to connect to peer %s:%d . Error: %s\n", node->hostname, node->port, mysql_error(conn));
@@ -180,7 +181,7 @@ void * ProxySQL_Cluster_Monitor_thread(void *args) {
 		}
 	}
 __exit_monitor_thread:
-	//if (conn) {
+	if (conn)
 	if (conn->net.vio) {
 		mysql_close(conn);
 	}
diff --git a/src/main.cpp b/src/main.cpp
index 5938af4c7..052cc1cb9 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -208,7 +208,7 @@ MySQL_STMT_Manager_v14 *GloMyStmt;
 #endif
 
 MySQL_Monitor *GloMyMon;
-std::thread *MyMon_thread;
+std::thread *MyMon_thread = NULL;
 
 MySQL_Logger *GloMyLogger;
 
@@ -505,7 +505,7 @@ void ProxySQL_Main_join_all_threads() {
 	}
 
 	// join GloMyMon thread
-	if (GloMyMon) {
+	if (GloMyMon && MyMon_thread) {
 		cpu_timer t;
 		MyMon_thread->join();
 #ifdef DEBUG