diff --git a/libs/ardour/ardour/rc_configuration_vars.h b/libs/ardour/ardour/rc_configuration_vars.h
index b4ea318898..99139a876d 100644
--- a/libs/ardour/ardour/rc_configuration_vars.h
+++ b/libs/ardour/ardour/rc_configuration_vars.h
@@ -40,8 +40,8 @@ CONFIG_VARIABLE (AutoConnectOption, output_auto_connect, "output-auto-connect",
 CONFIG_VARIABLE (AutoConnectOption, input_auto_connect, "input-auto-connect", AutoConnectPhysical)
 CONFIG_VARIABLE (bool, strict_io, "strict-io", true)
 
-/* 0: off, no varispeed, q: 8..96 */
-CONFIG_VARIABLE (uint32_t, port_resampler_quality, "port-resampler-quality,", 17)
+/* 0: off, no varispeed, q: 8..96 - resampler adds (resampler_quality - 1) samples latency */
+CONFIG_VARIABLE (uint32_t, port_resampler_quality, "port-resampler-quality", 17)
 
 /* Connect all physical inputs to a dummy port, this makes raw input data available.
  * `jack_port_get_buffer (jack_port_by_name (c, "system:capture_1") , n_samples);`