diff --git a/metadapta.go b/metadapta.go
index c23d579..aeea21f 100644
--- a/metadapta.go
+++ b/metadapta.go
@@ -17,7 +17,7 @@ type Party bool; const (
 )
 
 type a struct {
-	sizeLimit    int
+	sizeLimit    int64
 	underlying   net.Conn
 	party        Party
 	transID      int64
@@ -88,7 +88,7 @@ func (this *a) AcceptTrans() (Trans, error) {
 	}
 }
 
-func (this *a) SetSizeLimit(limit int) {
+func (this *a) SetSizeLimit(limit int64) {
 	this.sizeLimit = limit
 }