diff --git a/src/hash.h b/src/hash.h
index e39e023..ec52851 100644
--- a/src/hash.h
+++ b/src/hash.h
@@ -48,7 +48,7 @@ public:
 	virtual ~hash_proc() {}
 
 	void eat (const std::vector<byte>&a) {
-		return eat (& (a[0]), & (a[a.size()]));
+		return eat (a.data(), a.data() + a.size());
 	}
 
 	typedef std::map<std::string, factoryof<hash_proc>*> suite_t;