diff --git a/libs/ardour/ardour/rc_configuration_vars.h b/libs/ardour/ardour/rc_configuration_vars.h
index 9a6d1a43e2..8b6c26c725 100644
--- a/libs/ardour/ardour/rc_configuration_vars.h
+++ b/libs/ardour/ardour/rc_configuration_vars.h
@@ -86,8 +86,8 @@ CONFIG_VARIABLE (bool, use_tranzport,  "use-tranzport", false)
 
 /* disk operations */
 
-	CONFIG_VARIABLE (uint32_t, minimum_disk_read_bytes,  "minimum-disk-read-bytes", ARDOUR::DiskReader::default_chunk_samples() * sizeof (ARDOUR::Sample))
-CONFIG_VARIABLE (uint32_t, minimum_disk_write_bytes,  "minimum-disk-write-bytes", ARDOUR::DiskWriter::default_chunk_samples() * sizeof (ARDOUR::Sample))
+CONFIG_VARIABLE (uint32_t, minimum_disk_read_bytes, "minimum-disk-read-bytes", ARDOUR::DiskReader::default_chunk_samples() * sizeof (ARDOUR::Sample))
+CONFIG_VARIABLE (uint32_t, minimum_disk_write_bytes, "minimum-disk-write-bytes", ARDOUR::DiskWriter::default_chunk_samples() * sizeof (ARDOUR::Sample))
 CONFIG_VARIABLE (float, midi_readahead,  "midi-readahead", 1.0)
 CONFIG_VARIABLE (BufferingPreset, buffering_preset, "buffering-preset", Medium)
 CONFIG_VARIABLE (float, audio_capture_buffer_seconds, "capture-buffer-seconds", 5.0)