diff --git a/include/spdlog/details/registry.h b/include/spdlog/details/registry.h
index 66536cb4..5f708743 100644
--- a/include/spdlog/details/registry.h
+++ b/include/spdlog/details/registry.h
@@ -45,9 +45,10 @@ class registry
 {
 public:
 
-    void register_logger(std::shared_ptr<logger> logger, const std::string& logger_name)
+    void register_logger(std::shared_ptr<logger> logger)
     {
-        _loggers[logger_name] = logger;
+        std::lock_guard<std::mutex> lock(_mutex);
+        register_logger_impl(logger);
     }
 
 
@@ -61,12 +62,12 @@ public:
     template<class It>
     std::shared_ptr<logger> create(const std::string& logger_name, const It& sinks_begin, const It& sinks_end)
     {
-        std::lock_guard<std::mutex> lock(_mutex);
-        //If already exists, just return it
-        auto found = _loggers.find(logger_name);
-        if (found != _loggers.end())
-            return found->second;
+
         std::shared_ptr<logger> new_logger;
+
+        std::lock_guard<std::mutex> lock(_mutex);
+
+
         if (_async_mode)
             new_logger = std::make_shared<async_logger>(logger_name, sinks_begin, sinks_end, _async_q_size, _overflow_policy, _worker_warmup_cb);
         else
@@ -74,9 +75,9 @@ public:
 
         if (_formatter)
             new_logger->set_formatter(_formatter);
-        new_logger->set_level(_level);
-        register_logger(new_logger, logger_name);
 
+        new_logger->set_level(_level);
+        register_logger_impl(new_logger);
         return new_logger;
     }
 
@@ -148,6 +149,13 @@ public:
     }
 
 private:
+    void register_logger_impl(std::shared_ptr<logger> logger)
+    {
+        auto logger_name = logger->name();
+        if (_loggers.find(logger_name) != std::end(_loggers))
+            throw spdlog_ex("logger with name " + logger_name + " already exists");
+        _loggers[logger->name()] = logger;
+    }
     registry() = default;
     registry(const registry&) = delete;
     registry& operator=(const registry&) = delete;
diff --git a/include/spdlog/details/spdlog_impl.h b/include/spdlog/details/spdlog_impl.h
index 05e9c7b8..76843d71 100644
--- a/include/spdlog/details/spdlog_impl.h
+++ b/include/spdlog/details/spdlog_impl.h
@@ -32,9 +32,9 @@
 #include "../sinks/stdout_sinks.h"
 #include "../sinks/syslog_sink.h"
 
-inline void spdlog::register_logger(std::shared_ptr<logger> logger, const std::string& logger_name)
+inline void spdlog::register_logger(std::shared_ptr<logger> logger)
 {
-    return details::registry::instance().register_logger(logger, logger_name);
+    return details::registry::instance().register_logger(logger);
 }
 
 inline std::shared_ptr<spdlog::logger> spdlog::get(const std::string& name)
diff --git a/include/spdlog/spdlog.h b/include/spdlog/spdlog.h
index d195e1ed..8601555f 100644
--- a/include/spdlog/spdlog.h
+++ b/include/spdlog/spdlog.h
@@ -116,7 +116,7 @@ std::shared_ptr<spdlog::logger> create(const std::string& logger_name, const Arg
 
 
 // Register the given logger with the given name
-void register_logger(std::shared_ptr<logger> logger, const std::string& logger_name);
+void register_logger(std::shared_ptr<logger> logger);
 
 // Drop the reference to the given logger
 void drop(const std::string &name);