diff --git a/mmss/mmss.hpp b/mmss/mmss.hpp
index 28f3ddd..d7202e7 100644
--- a/mmss/mmss.hpp
+++ b/mmss/mmss.hpp
@@ -121,7 +121,7 @@ public:
 	std::weak_ptr<iface_t> dest;
 
 	size_t len;
-	std::unique_ptr<uint8_t> data;
+	std::unique_ptr<uint8_t[]> data;
 };
 
 class scheduled_t {