diff --git a/cmd/govim/complete.go b/cmd/govim/complete.go
index 206d5d009..9cd3273ba 100644
--- a/cmd/govim/complete.go
+++ b/cmd/govim/complete.go
@@ -64,6 +64,7 @@ func (v *vimstate) complete(args ...json.RawMessage) (interface{}, error) {
 				Menu:     i.Detail,
 				Word:     i.TextEdit.NewText,
 				Info:     i.Documentation,
+				Dup:      1,
 				UserData: "govim",
 			})
 		}
diff --git a/complete.go b/complete.go
index 010a20b1d..b477356c5 100644
--- a/complete.go
+++ b/complete.go
@@ -27,6 +27,7 @@ type CompleteItem struct {
 	Info     string `json:"info"`
 	Menu     string `json:"menu"`
 	UserData string `json:"user_data"`
+	Dup      int    `json:"dup"`
 }
 
 type CompleteInfo struct {