diff --git a/include/spdlog/details/log_msg.h b/include/spdlog/details/log_msg.h
index 21f8bc6d..6244f3a9 100644
--- a/include/spdlog/details/log_msg.h
+++ b/include/spdlog/details/log_msg.h
@@ -15,7 +15,6 @@ namespace spdlog {
 namespace details {
 struct log_msg
 {
-    log_msg() = default;
 
     log_msg(const std::string *loggers_name, level::level_enum lvl, string_view_t view)
         : logger_name(loggers_name)
@@ -38,9 +37,9 @@ struct log_msg
     level::level_enum level{level::off};
     log_clock::time_point time;
     size_t thread_id{0};
-    size_t msg_id;
+    size_t msg_id{0};
 
-    // info about wrapping the formatted text with color (updated by pattern_formatter).
+    // wrapping the formatted text with color (updated by pattern_formatter).
     mutable size_t color_range_start{0};
     mutable size_t color_range_end{0};
 
diff --git a/include/spdlog/details/thread_pool.h b/include/spdlog/details/thread_pool.h
index de01ad58..ec9d1788 100644
--- a/include/spdlog/details/thread_pool.h
+++ b/include/spdlog/details/thread_pool.h
@@ -82,12 +82,17 @@ struct async_msg
     }
 
     async_msg(async_logger_ptr &&worker, async_msg_type the_type)
-        : async_msg(std::move(worker), the_type, details::log_msg())
+        : msg_type(the_type)
+        , level(level::off)
+        , time()
+        , thread_id(0)
+        , msg_id(0)
+        , worker_ptr(std::move(worker))
     {
     }
 
     explicit async_msg(async_msg_type the_type)
-        : async_msg(nullptr, the_type, details::log_msg())
+        : async_msg(nullptr, the_type)
     {
     }
 
diff --git a/tests/file_helper.cpp b/tests/file_helper.cpp
index bfe7eb9d..ecdc5afe 100644
--- a/tests/file_helper.cpp
+++ b/tests/file_helper.cpp
@@ -10,7 +10,6 @@ static const std::string target_filename = "logs/file_helper_test.txt";
 
 static void write_with_helper(file_helper &helper, size_t howmany)
 {
-    log_msg msg;
     fmt::memory_buffer formatted;
     fmt::format_to(formatted, "{}", std::string(howmany, '1'));
     helper.write(formatted);
diff --git a/tests/test_pattern_formatter.cpp b/tests/test_pattern_formatter.cpp
index 8b8c9447..7b062a5d 100644
--- a/tests/test_pattern_formatter.cpp
+++ b/tests/test_pattern_formatter.cpp
@@ -75,7 +75,8 @@ TEST_CASE("color range test1", "[pattern_formatter]")
 TEST_CASE("color range test2", "[pattern_formatter]")
 {
     auto formatter = std::make_shared<spdlog::pattern_formatter>("%^%$", spdlog::pattern_time_type::local, "\n");
-    spdlog::details::log_msg msg;
+    std::string logger_name = "test";
+    spdlog::details::log_msg msg(&logger_name, spdlog::level::info, "");
     fmt::memory_buffer formatted;
     formatter->format(msg, formatted);
     REQUIRE(msg.color_range_start == 0);
@@ -86,7 +87,8 @@ TEST_CASE("color range test2", "[pattern_formatter]")
 TEST_CASE("color range test3", "[pattern_formatter]")
 {
     auto formatter = std::make_shared<spdlog::pattern_formatter>("%^***%$");
-    spdlog::details::log_msg msg;
+    std::string logger_name = "test";
+    spdlog::details::log_msg msg(&logger_name, spdlog::level::info, "ignored");
     fmt::memory_buffer formatted;
     formatter->format(msg, formatted);
     REQUIRE(msg.color_range_start == 0);
@@ -109,7 +111,8 @@ TEST_CASE("color range test4", "[pattern_formatter]")
 TEST_CASE("color range test5", "[pattern_formatter]")
 {
     auto formatter = std::make_shared<spdlog::pattern_formatter>("**%^");
-    spdlog::details::log_msg msg;
+    std::string logger_name = "test";
+    spdlog::details::log_msg msg(&logger_name, spdlog::level::info, "ignored");
     fmt::memory_buffer formatted;
     formatter->format(msg, formatted);
     REQUIRE(msg.color_range_start == 2);
@@ -119,7 +122,8 @@ TEST_CASE("color range test5", "[pattern_formatter]")
 TEST_CASE("color range test6", "[pattern_formatter]")
 {
     auto formatter = std::make_shared<spdlog::pattern_formatter>("**%$");
-    spdlog::details::log_msg msg;
+    std::string logger_name = "test";
+    spdlog::details::log_msg msg(&logger_name, spdlog::level::info, "ignored");
     fmt::memory_buffer formatted;
     formatter->format(msg, formatted);
     REQUIRE(msg.color_range_start == 0);