diff --git a/example/example.cpp b/example/example.cpp
index ea6e5f06..0597ec75 100644
--- a/example/example.cpp
+++ b/example/example.cpp
@@ -60,8 +60,8 @@ int main(int, char *[])
         // Customize msg format for all messages
         spd::set_pattern("[%^+++%$] [%H:%M:%S %z] [thread %t] %v");
         console->info("This an info message with custom format (and custom color range between the '%^' and '%$')");
-		console->error("This an error message with custom format (and custom color range between the '%^' and '%$')");
-		
+        console->error("This an error message with custom format (and custom color range between the '%^' and '%$')");
+
         // Runtime log levels
         spd::set_level(spd::level::info); // Set global log level to info
         console->debug("This message should not be displayed!");
diff --git a/include/spdlog/sinks/wincolor_sink.h b/include/spdlog/sinks/wincolor_sink.h
index d21151db..402fa121 100644
--- a/include/spdlog/sinks/wincolor_sink.h
+++ b/include/spdlog/sinks/wincolor_sink.h
@@ -25,7 +25,7 @@ class wincolor_sink : public base_sink<Mutex>
 public:
     const WORD BOLD = FOREGROUND_INTENSITY;
     const WORD RED = FOREGROUND_RED;
-	const WORD GREEN = FOREGROUND_GREEN;
+    const WORD GREEN = FOREGROUND_GREEN;
     const WORD CYAN = FOREGROUND_GREEN | FOREGROUND_BLUE;
     const WORD WHITE = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
     const WORD YELLOW = FOREGROUND_RED | FOREGROUND_GREEN;
@@ -60,22 +60,22 @@ public:
 protected:
     void _sink_it(const details::log_msg &msg) override
     {
-		if (msg.color_range_end > msg.color_range_start)
-		{
-			// before color range
-			_print_range(msg, 0, msg.color_range_start);
-			
-			// in color range			
-			auto orig_attribs = set_console_attribs(colors_[msg.level]);
-			_print_range(msg, msg.color_range_start, msg.color_range_end);			
-			::SetConsoleTextAttribute(out_handle_, orig_attribs); // reset to orig colors
-			// after color range
-			_print_range(msg, msg.color_range_end, msg.formatted.size());			
-		}
-		else // print without colors if color range is invalid
-		{
-			_print_range(msg, 0, msg.formatted.size());			
-		}
+        if (msg.color_range_end > msg.color_range_start)
+        {
+            // before color range
+            _print_range(msg, 0, msg.color_range_start);
+
+            // in color range
+            auto orig_attribs = set_console_attribs(colors_[msg.level]);
+            _print_range(msg, msg.color_range_start, msg.color_range_end);
+            ::SetConsoleTextAttribute(out_handle_, orig_attribs); // reset to orig colors
+            // after color range
+            _print_range(msg, msg.color_range_end, msg.formatted.size());
+        }
+        else // print without colors if color range is invalid
+        {
+            _print_range(msg, 0, msg.formatted.size());
+        }
     }
 
     void _flush() override
@@ -100,12 +100,12 @@ private:
         return orig_buffer_info.wAttributes; // return orig attribs
     }
 
-	// print a range of formatted message to console
-	void _print_range(const details::log_msg &msg, size_t start, size_t end)
-	{
-		DWORD size = static_cast<DWORD>(end - start);
-		WriteConsoleA(out_handle_, msg.formatted.data() + start, size, nullptr, nullptr);		
-	}
+    // print a range of formatted message to console
+    void _print_range(const details::log_msg &msg, size_t start, size_t end)
+    {
+        DWORD size = static_cast<DWORD>(end - start);
+        WriteConsoleA(out_handle_, msg.formatted.data() + start, size, nullptr, nullptr);
+    }
 };
 
 //
diff --git a/tests/test_pattern_formatter.cpp b/tests/test_pattern_formatter.cpp
index 644cb80e..c6700041 100644
--- a/tests/test_pattern_formatter.cpp
+++ b/tests/test_pattern_formatter.cpp
@@ -7,10 +7,10 @@ static std::string log_to_str(const std::string &msg, const std::shared_ptr<spdl
     auto oss_sink = std::make_shared<spdlog::sinks::ostream_sink_mt>(oss);
     spdlog::logger oss_logger("pattern_tester", oss_sink);
     oss_logger.set_level(spdlog::level::info);
-	if (formatter)
-	{
-		oss_logger.set_formatter(formatter);
-	}
+    if (formatter)
+    {
+        oss_logger.set_formatter(formatter);
+    }
     oss_logger.info(msg);
     return oss.str();
 }
@@ -65,60 +65,60 @@ TEST_CASE("date MM/DD/YY ", "[pattern_formatter]")
 }
 
 TEST_CASE("color range test1", "[pattern_formatter]")
-{	
-	auto formatter = std::make_shared<spdlog::pattern_formatter>("%^%v%$", spdlog::pattern_time_type::local, "\n");
-	spdlog::details::log_msg msg;
-	msg.raw << "Hello";
-	formatter->format(msg);
-	REQUIRE(msg.color_range_start == 0);
-	REQUIRE(msg.color_range_end == 5);	
-	REQUIRE(log_to_str("hello", formatter) == "hello\n");
+{
+    auto formatter = std::make_shared<spdlog::pattern_formatter>("%^%v%$", spdlog::pattern_time_type::local, "\n");
+    spdlog::details::log_msg msg;
+    msg.raw << "Hello";
+    formatter->format(msg);
+    REQUIRE(msg.color_range_start == 0);
+    REQUIRE(msg.color_range_end == 5);
+    REQUIRE(log_to_str("hello", formatter) == "hello\n");
 }
 
 TEST_CASE("color range test2", "[pattern_formatter]")
 {
-	auto formatter = std::make_shared<spdlog::pattern_formatter>("%^%$", spdlog::pattern_time_type::local, "\n");
-	spdlog::details::log_msg msg;	
-	formatter->format(msg);
-	REQUIRE(msg.color_range_start == 0);
-	REQUIRE(msg.color_range_end == 0);
-	REQUIRE(log_to_str("", formatter) == "\n");
+    auto formatter = std::make_shared<spdlog::pattern_formatter>("%^%$", spdlog::pattern_time_type::local, "\n");
+    spdlog::details::log_msg msg;
+    formatter->format(msg);
+    REQUIRE(msg.color_range_start == 0);
+    REQUIRE(msg.color_range_end == 0);
+    REQUIRE(log_to_str("", formatter) == "\n");
 }
 
 TEST_CASE("color range test3", "[pattern_formatter]")
 {
-	auto formatter = std::make_shared<spdlog::pattern_formatter>("%^***%$");
-	spdlog::details::log_msg msg;
-	formatter->format(msg);
-	REQUIRE(msg.color_range_start == 0);
-	REQUIRE(msg.color_range_end == 3);
+    auto formatter = std::make_shared<spdlog::pattern_formatter>("%^***%$");
+    spdlog::details::log_msg msg;
+    formatter->format(msg);
+    REQUIRE(msg.color_range_start == 0);
+    REQUIRE(msg.color_range_end == 3);
 }
 
 TEST_CASE("color range test4", "[pattern_formatter]")
 {
-	auto formatter = std::make_shared<spdlog::pattern_formatter>("XX%^YYY%$", spdlog::pattern_time_type::local, "\n");
-	spdlog::details::log_msg msg;
-	msg.raw << "ignored";
-	formatter->format(msg);
-	REQUIRE(msg.color_range_start == 2);
-	REQUIRE(msg.color_range_end == 5);
-	REQUIRE(log_to_str("ignored", formatter) == "XXYYY\n");
+    auto formatter = std::make_shared<spdlog::pattern_formatter>("XX%^YYY%$", spdlog::pattern_time_type::local, "\n");
+    spdlog::details::log_msg msg;
+    msg.raw << "ignored";
+    formatter->format(msg);
+    REQUIRE(msg.color_range_start == 2);
+    REQUIRE(msg.color_range_end == 5);
+    REQUIRE(log_to_str("ignored", formatter) == "XXYYY\n");
 }
 
 TEST_CASE("color range test5", "[pattern_formatter]")
 {
-	auto formatter = std::make_shared<spdlog::pattern_formatter>("**%^");
-	spdlog::details::log_msg msg;
-	formatter->format(msg);
-	REQUIRE(msg.color_range_start == 2);
-	REQUIRE(msg.color_range_end == 0);
+    auto formatter = std::make_shared<spdlog::pattern_formatter>("**%^");
+    spdlog::details::log_msg msg;
+    formatter->format(msg);
+    REQUIRE(msg.color_range_start == 2);
+    REQUIRE(msg.color_range_end == 0);
 }
 
 TEST_CASE("color range test6", "[pattern_formatter]")
 {
-	auto formatter = std::make_shared<spdlog::pattern_formatter>("**%$");
-	spdlog::details::log_msg msg;
-	formatter->format(msg);
-	REQUIRE(msg.color_range_start == 0);
-	REQUIRE(msg.color_range_end == 2);
+    auto formatter = std::make_shared<spdlog::pattern_formatter>("**%$");
+    spdlog::details::log_msg msg;
+    formatter->format(msg);
+    REQUIRE(msg.color_range_start == 0);
+    REQUIRE(msg.color_range_end == 2);
 }