diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 82b42c9..a2a662d 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -3992,8 +3992,9 @@
 
 	trace_event=[event-list]
 			[FTRACE] Set and start specified trace events in order
-			to facilitate early boot debugging.
-			See also Documentation/trace/events.txt
+			to facilitate early boot debugging. The event-list is a
+			comma separated list of trace events to enable. See
+			also Documentation/trace/events.txt
 
 	trace_options=[option-list]
 			[FTRACE] Enable or disable tracer options at boot.