diff --git a/zebra-state/src/config.rs b/zebra-state/src/config.rs
index baa14ddf..31ef2911 100644
--- a/zebra-state/src/config.rs
+++ b/zebra-state/src/config.rs
@@ -41,7 +41,7 @@ pub struct Config {
 
     /// Commit blocks to the finalized state up to this height, then exit Zebra.
     ///
-    /// If `None`, continue syncing indefinitely.
+    /// Set to `None` by default: Zebra continues syncing indefinitely.
     pub debug_stop_at_height: Option<u32>,
 }