diff --git a/rev/front/intro.md b/rev/front/intro.md
index fe016e3a7e..ea334e2aff 100644
--- a/rev/front/intro.md
+++ b/rev/front/intro.md
@@ -12,7 +12,7 @@
 1. Worshipers of the Lamb, the martyrs, and the harvest of wrath (14:1-20)
 1. The seven bowls (15:1-18:24)
 1. Worship in heaven (19:1-10)
-1. The Lamb's judgment, the destruction of the beast, the thousand years, the destruction of Satan, and the final judgment (20:11-15)
+1. The Lamb's judgment, the destruction of the beast, the thousand years, the destruction of Satan, and the final judgment (19:11-20:15)
 1. The new creation and the new Jerusalem (21:1-22:5)
 1. Jesus's promise to return, the witness from the angels, John's closing words, Christ's message to his church, and the invitation and the warning (22:6-21)