diff --git a/tools/libinput-debug-events.man b/tools/libinput-debug-events.man
index abccfa66..4e720fce 100644
--- a/tools/libinput-debug-events.man
+++ b/tools/libinput-debug-events.man
@@ -62,6 +62,9 @@ Enable or disable natural scrolling
 .B \-\-enable\-left\-handed|\-\-disable\-left\-handed
 Enable or disable left handed button configuration
 .TP 8
+.B \-\-enable\-middlebutton|\-\-disable\-middlebutton
+Enable or disable middle button emulation
+.TP 8
 .B \-\-enable\-dwt|\-\-disable\-dwt
 Enable or disable disable-while-typing
 .TP 8