diff --git a/go/registry/api/runtime.go b/go/registry/api/runtime.go
index f19244b160e..c2e3a958a02 100644
--- a/go/registry/api/runtime.go
+++ b/go/registry/api/runtime.go
@@ -155,7 +155,7 @@ func (t *TxnSchedulerParameters) ValidateBasic() error {
 	if t.MaxBatchSizeBytes < 1024 {
 		return fmt.Errorf("transaction scheduler max batch bytes size parameter too small")
 	}
-	if t.ProposerTimeout < 5 {
+	if t.ProposerTimeout < 2 {
 		return fmt.Errorf("transaction scheduler proposer timeout parameter too small")
 	}