diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index 4353262bc462b05cc3c4008c1a39e06ee76b758b..8a32cc77bead37463b8d2517bf3d9a5c42ce8673 100644
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -268,6 +268,12 @@ INTERACTIVE PROMPTING KEYS
 [S]::
 	Stop annotation, return to full profile display.
 
+[K]::
+	Hide kernel symbols.
+
+[U]::
+	Hide user symbols.
+
 [z]::
 	Toggle event count zeroing across display updates.