diff --git a/pkg/vm/stackitem/serialization.go b/pkg/vm/stackitem/serialization.go
index f9a9c7390..f6b603718 100644
--- a/pkg/vm/stackitem/serialization.go
+++ b/pkg/vm/stackitem/serialization.go
@@ -98,7 +98,7 @@ func DecodeBinaryStackItem(r *io.BinReader) Item {
 
 	switch t {
 	case ByteArrayT, BufferT:
-		data := r.ReadVarBytes()
+		data := r.ReadVarBytes(MaxSize)
 		return NewByteArray(data)
 	case BooleanT:
 		var b = r.ReadBool()