diff --git a/htop.1.in b/htop.1.in
index 70334f9b7..db7d7ee54 100644
--- a/htop.1.in
+++ b/htop.1.in
@@ -272,6 +272,9 @@ Pause/resume process updates.
 .B m
 Merge exe, comm and cmdline, where applicable. (This is a toggle key.)
 .TP
+.B b
+Show the backtrace of a process, where applicable. (This is a toggle key.)
+.TP
 .B Ctrl-L
 Refresh: redraw screen and recalculate values.
 .TP