diff --git a/build/params_2k.go b/build/params_2k.go
index 0ef1d9b34..9913374e1 100644
--- a/build/params_2k.go
+++ b/build/params_2k.go
@@ -29,7 +29,7 @@ func init() {
 	BuildType |= Build2k
 }
 
-const BlockDelaySecs = uint64(30)
+const BlockDelaySecs = uint64(4)
 
 const PropagationDelaySecs = uint64(1)