diff --git a/doc/pipewire-daemon.dox b/doc/pipewire-daemon.dox
index 2ca2c243b..4276ffcdd 100644
--- a/doc/pipewire-daemon.dox
+++ b/doc/pipewire-daemon.dox
@@ -129,7 +129,7 @@ Allowed configuration file sections are:
 The `PIPEWIRE_DEBUG` environment variable can be used to enable
 more debugging. The format is:
 
-`<level>[<category>;...]`
+`<level>[<category>,<category>,...]`
 
 - `<level>` specifies the log level:
   + `0`: no logging is enabled