diff --git a/firmware/application/io_wave.cpp b/firmware/application/io_wave.cpp
index f8249205..57cc5568 100644
--- a/firmware/application/io_wave.cpp
+++ b/firmware/application/io_wave.cpp
@@ -125,7 +125,7 @@ uint16_t WAVFileReader::bits_per_sample() {
 Optional<File::Error> WAVFileWriter::create(
 	const std::filesystem::path& filename,
 	size_t sampling_rate_set,
-	std::string title_set
+	const std::string& title_set
 ) {
 	sampling_rate = sampling_rate_set;
 	title = title_set;
@@ -139,19 +139,24 @@ Optional<File::Error> WAVFileWriter::create(
 
 Optional<File::Error> WAVFileWriter::update_header() {
 	header_t header { sampling_rate, (uint32_t)bytes_written - sizeof(header_t), info_chunk_size };
+	
 	const auto seek_0_result = file.seek(0);
 	if( seek_0_result.is_error() ) {
 		return seek_0_result.error();
 	}
+	
 	const auto old_position = seek_0_result.value();
+	
 	const auto write_result = file.write(&header, sizeof(header));
 	if( write_result.is_error() ) {
 		return write_result.error();
 	}
+	
 	const auto seek_old_result = file.seek(old_position);
 	if( seek_old_result.is_error() ) {
 		return seek_old_result.error();
 	}
+	
 	return { };
 }
 
diff --git a/firmware/application/io_wave.hpp b/firmware/application/io_wave.hpp
index 6bebc020..baf43cd6 100644
--- a/firmware/application/io_wave.hpp
+++ b/firmware/application/io_wave.hpp
@@ -173,7 +173,7 @@ public:
 	Optional<File::Error> create(
 		const std::filesystem::path& filename,
 		size_t sampling_rate,
-		std::string title_set
+		const std::string& title_set
 	);
 
 private:
diff --git a/firmware/application/main.cpp b/firmware/application/main.cpp
index 7d4980d8..6138ff75 100755
--- a/firmware/application/main.cpp
+++ b/firmware/application/main.cpp
@@ -23,7 +23,6 @@
 // Color bitmaps generated with:
 // Gimp image > indexed colors (16), then "xxd -i *.bmp"
 
-//TEST: ADS-B tx velocity and squawk frames
 //TEST: Menuview refresh, seems to blink a lot
 //TEST: Check AFSK transmit end, skips last bits ?
 //TEST: Imperial in whipcalc
diff --git a/firmware/portapack-h1-havoc.bin b/firmware/portapack-h1-havoc.bin
index 0f2656d4..582c037b 100644
Binary files a/firmware/portapack-h1-havoc.bin and b/firmware/portapack-h1-havoc.bin differ