diff --git a/src/github.com/matrix-org/go-neb/matrix/types.go b/src/github.com/matrix-org/go-neb/matrix/types.go
index 1d1f20f..08dc1ba 100644
--- a/src/github.com/matrix-org/go-neb/matrix/types.go
+++ b/src/github.com/matrix-org/go-neb/matrix/types.go
@@ -95,6 +95,7 @@ type TextMessage struct {
 	Body    string `json:"body"`
 }
 
+// ImageInfo contains info about an image
 type ImageInfo struct {
 	Height   uint   `json:"h"`
 	Width    uint   `json:"w"`