diff --git a/module-xrdp-sink.c b/module-xrdp-sink.c
index 5d6256d..f56644b 100644
--- a/module-xrdp-sink.c
+++ b/module-xrdp-sink.c
@@ -77,7 +77,7 @@ PA_MODULE_USAGE(
         "sink_name=<name for the sink> "
         "sink_properties=<properties for the sink> "
         "format=<sample format> "
-        "rate=<sample rate>"
+        "rate=<sample rate> "
         "channels=<number of channels> "
         "channel_map=<channel map>");