diff --git a/Storage/Disk/Encodings/MFM/Constants.hpp b/Storage/Disk/Encodings/MFM/Constants.hpp
index 838e7d34e..ec8cea788 100644
--- a/Storage/Disk/Encodings/MFM/Constants.hpp
+++ b/Storage/Disk/Encodings/MFM/Constants.hpp
@@ -44,6 +44,7 @@ const Time FMBitLength					= Time(1, 50000);
 
 constexpr Time bit_length(Density density) {
 	switch(density) {
+		default:
 		case Density::Single:	return FMBitLength;
 		case Density::Double:	return MFMBitLength;
 		case Density::High:		return HDMFMBitLength;
diff --git a/Storage/Disk/Encodings/MFM/Encoder.cpp b/Storage/Disk/Encodings/MFM/Encoder.cpp
index 0379fadab..aa05f47f9 100644
--- a/Storage/Disk/Encodings/MFM/Encoder.cpp
+++ b/Storage/Disk/Encodings/MFM/Encoder.cpp
@@ -382,6 +382,7 @@ std::shared_ptr<Storage::Disk::Track> Storage::Encodings::MFM::TrackWithSectors(
 	std::optional<uint8_t> sector_gap_filler_byte
 ) {
 	switch(density) {
+		default:
 		case Density::Single:	return TTrackWithSectors<Density::Single>(sectors, sector_gap_length, sector_gap_filler_byte);
 		case Density::Double:	return TTrackWithSectors<Density::Double>(sectors, sector_gap_length, sector_gap_filler_byte);
 		case Density::High:		return TTrackWithSectors<Density::High>(sectors, sector_gap_length, sector_gap_filler_byte);