diff --git a/lib/ProxySQL_Admin.cpp b/lib/ProxySQL_Admin.cpp
index 39e417520..869e5fafb 100644
--- a/lib/ProxySQL_Admin.cpp
+++ b/lib/ProxySQL_Admin.cpp
@@ -6033,6 +6033,7 @@ ProxySQL_Admin::ProxySQL_Admin() :
 	variables.p_memory_metrics_interval = 61;
 #ifdef DEBUG
 	variables.debug=GloVars.global.gdbg;
+	all_modules_started = false;
 	debug_output = 1;
 	proxysql_set_admin_debug_output(debug_output);
 #endif /* DEBUG */