diff --git a/native/request/protocol.go b/native/request/protocol.go
new file mode 100644
index 0000000..47dde72
--- /dev/null
+++ b/native/request/protocol.go
@@ -0,0 +1,19 @@
+package request
+
+// 5.8 Protocols (from OpenRTB spec 2.5)
+//
+// Options for the various bid response protocols that could be supported by an exchange.
+type Protocol int8
+
+const (
+	ProtocolVAST10         Protocol = 1  // VAST 1.0
+	ProtocolVAST20         Protocol = 2  // VAST 2.0
+	ProtocolVAST30         Protocol = 3  // VAST 3.0
+	ProtocolVAST10Wrapper  Protocol = 4  // VAST 1.0 Wrapper
+	ProtocolVAST20Wrapper  Protocol = 5  // VAST 2.0 Wrapper
+	ProtocolVAST30Wrapper  Protocol = 6  // VAST 3.0 Wrapper
+	ProtocolVAST40         Protocol = 7  // VAST 4.0
+	ProtocolVAST40Wrapper  Protocol = 8  // VAST 4.0 Wrapper
+	ProtocolDAAST10        Protocol = 9  // DAAST 1.0
+	ProtocolDAAST10Wrapper Protocol = 10 // DAAST 1.0 Wrapper
+)
diff --git a/native/request/video.go b/native/request/video.go
index f2a8094..4ba8472 100644
--- a/native/request/video.go
+++ b/native/request/video.go
@@ -48,7 +48,7 @@ type Video struct {
 	//   array of integers
 	// Description:
 	//   An array of video protocols the publisher can accept in the bid response.
-	// See OpenRTB Table ‘Video Bid Response Protocols’ for a list of possible values.
+	//   See OpenRTB Table ‘Video Bid Response Protocols’ for a list of possible values.
 	Protocols []int8 `json:"protocols"` // TODO!!!
 
 	// Field: