diff --git a/object/wall.go b/object/wall.go
index 63b17540..15f88251 100644
--- a/object/wall.go
+++ b/object/wall.go
@@ -166,6 +166,7 @@ type WallWallpost struct {
 	ShortTextRate  float64                  `json:"short_text_rate"`
 	CarouselOffset int                      `json:"carousel_offset"`
 	Header         WallWallpostHeader       `json:"header"`
+	Hash           string                   `json:"hash"`
 }
 
 // Attachment type.