diff --git a/doc/fulcrum-example-config.conf b/doc/fulcrum-example-config.conf
index 8b20b5c6..beea7940 100644
--- a/doc/fulcrum-example-config.conf
+++ b/doc/fulcrum-example-config.conf
@@ -698,7 +698,7 @@ rpcpassword = hunter1
 # (3 GB). The default is off (0). This option only takes effect on initial sync,
 # otherwise this option has no effect.
 #
-#fast-sync = false
+#fast-sync = 0
 
 
 # Maximum batch size (per IP) - 'max_batch' - DEFAULT: 345