diff --git a/doc/pipewire-daemon.dox b/doc/pipewire-daemon.dox
index 75995bd66..0c0aa03a6 100644
--- a/doc/pipewire-daemon.dox
+++ b/doc/pipewire-daemon.dox
@@ -144,4 +144,10 @@ more debugging. The format is:
      	  can be separated by commas. Current categories are:
   + `connection`: to log connection messages
 
+
+The behavior of the logging can be further controlled with the following
+environment variables:
+- `PIPEWIRE_LOG_SYSTEMD=false`: disable logging to the systemd journal
+- `PIPEWIRE_LOG=<filename>`: redirect the log to the given filename
+
 */