diff --git a/db_bridge/include/abstract_db.h b/db_bridge/include/abstract_db.h
--- a/db_bridge/include/abstract_db.h
+++ b/db_bridge/include/abstract_db.h
@@ -17,8 +17,7 @@
     std::string server;
 
   public:
-    virtual ~ Abstract_DB () {
-    };
+    virtual ~ Abstract_DB () {}
     virtual bool connect () = 0;
     virtual std::vector < std::vector<std::string> >query (std::string) = 0;
 };