diff --git a/include/spdlog/details/log_msg_buffer-inl.h b/include/spdlog/details/log_msg_buffer-inl.h
index 704cd9fa..0c1d9f35 100644
--- a/include/spdlog/details/log_msg_buffer-inl.h
+++ b/include/spdlog/details/log_msg_buffer-inl.h
@@ -42,9 +42,9 @@ SPDLOG_INLINE log_msg_buffer &log_msg_buffer::operator=(const log_msg_buffer &ot
     return *this;
 }
 
-SPDLOG_INLINE log_msg_buffer &log_msg_buffer::operator=(log_msg_buffer &&other)
+SPDLOG_INLINE log_msg_buffer &log_msg_buffer::operator=(log_msg_buffer &&other) SPDLOG_NOEXCEPT
 {
-    log_msg::operator=(std::move(other));
+    log_msg::operator=(other);
     buffer = std::move(other.buffer);
     update_string_views();
     return *this;
diff --git a/include/spdlog/details/log_msg_buffer.h b/include/spdlog/details/log_msg_buffer.h
index 1a204e22..c20ae7b0 100644
--- a/include/spdlog/details/log_msg_buffer.h
+++ b/include/spdlog/details/log_msg_buffer.h
@@ -22,7 +22,7 @@ public:
     log_msg_buffer(const log_msg_buffer &other);
     log_msg_buffer(log_msg_buffer &&other) SPDLOG_NOEXCEPT;
     log_msg_buffer &operator=(const log_msg_buffer &other);
-    log_msg_buffer &operator=(log_msg_buffer &&other);
+    log_msg_buffer &operator=(log_msg_buffer &&other) SPDLOG_NOEXCEPT;
 };
 
 } // namespace details
diff --git a/include/spdlog/details/pattern_formatter-inl.h b/include/spdlog/details/pattern_formatter-inl.h
index 8eeea621..8bee8a51 100644
--- a/include/spdlog/details/pattern_formatter-inl.h
+++ b/include/spdlog/details/pattern_formatter-inl.h
@@ -876,7 +876,7 @@ public:
         fmt_helper::pad6(static_cast<size_t>(delta_units.count()), dest);
     }
 
-protected:
+private:
     log_clock::time_point last_message_time_;
 };
 
diff --git a/include/spdlog/logger-inl.h b/include/spdlog/logger-inl.h
index 062304ba..95a485f1 100644
--- a/include/spdlog/logger-inl.h
+++ b/include/spdlog/logger-inl.h
@@ -150,7 +150,7 @@ SPDLOG_INLINE std::vector<sink_ptr> &logger::sinks()
 // error handler
 SPDLOG_INLINE void logger::set_error_handler(err_handler handler)
 {
-    custom_err_handler_ = handler;
+    custom_err_handler_ = std::move(handler);
 }
 
 // create new logger with same sinks and configuration.