diff --git a/src/backend/access/gin/gindatapage.c b/src/backend/access/gin/gindatapage.c
index 97c8bf78e7e..276376a6f1d 100644
--- a/src/backend/access/gin/gindatapage.c
+++ b/src/backend/access/gin/gindatapage.c
@@ -86,7 +86,7 @@ typedef struct
 	char		action;
 
 	ItemPointerData *modifieditems;
-	int			nmodifieditems;
+	uint16		nmodifieditems;
 
 	/*
 	 * The following fields represent the items in this segment. If 'items' is