diff --git a/src/mame/drivers/osborne1.cpp b/src/mame/drivers/osborne1.cpp
index 43501d3c897..4eb48432f7d 100644
--- a/src/mame/drivers/osborne1.cpp
+++ b/src/mame/drivers/osborne1.cpp
@@ -258,7 +258,7 @@ INPUT_PORTS_END
 static void osborne1_floppies(device_slot_interface &device)
 {
 	device.option_add("525sssd", FLOPPY_525_SSSD); // Siemens FDD 100-5, custom Osborne electronics
-	device.option_add("525ssdd", FLOPPY_525_QD); // SSDD) // MPI 52(?), custom Osborne electronics
+	device.option_add("525ssdd", FLOPPY_525_SSDD); // MPI 52(?), custom Osborne electronics
 }