diff --git a/release_notes/changelog-20.md b/release_notes/changelog-20.md
index 3f988f45af..6458ed33cf 100644
--- a/release_notes/changelog-20.md
+++ b/release_notes/changelog-20.md
@@ -28,7 +28,7 @@ $ blockstack-core stop
 $ mv ~/.blockstack-server ~/.blockstack-server.19
 
 # start the new node
-$ blockstack-core fast-sync
+$ blockstack-core fast_sync
 $ blockstack-core start
 ```