@@ -74,11 +74,11 @@
 }
 
 - (OFDataArray*)messagePackRepresentation
 {
 	OFDataArray *ret;
-	int8_t prefix;
+	uint8_t prefix;
 	size_t count = [_data count];
 
 	if (count == 1) {
 		ret = [OFDataArray dataArrayWithCapacity: 3];