diff --git a/websocketpp/logger/basic.hpp b/websocketpp/logger/basic.hpp
index 36ceb6c7b6..90eaa14038 100644
--- a/websocketpp/logger/basic.hpp
+++ b/websocketpp/logger/basic.hpp
@@ -82,6 +82,7 @@ public:
         *m_out << "[" << get_timestamp() << "] " 
                   << "[" << names::channel_name(channel) << "] " 
                   << msg << "\n";
+        m_out.flush();
     }
     
     void write(level channel, const char* msg) {
@@ -90,6 +91,7 @@ public:
         *m_out << "[" << get_timestamp() << "] "
                   << "[" << names::channel_name(channel) << "] " 
                   << msg << "\n";
+        m_out.flush();
     }
     
     bool static_test(level channel) const {