diff --git a/core/invitation.go b/core/invitation.go
index 6b019b6..2822b6a 100644
--- a/core/invitation.go
+++ b/core/invitation.go
@@ -268,12 +268,17 @@ func (iv *invitation) InviteAsFriend(w http.ResponseWriter, r *http.Request) {
 	_, newid, err := iv.mongoClient.Update(invitation_collection_name, bson.M{
 		"_id": combineObjectID(ivdoc.From, ivdoc.To),
 	}, bson.M{"$setOnInsert": ivdoc}, options.Update().SetUpsert(true))
-	if err != nil || newid == nil {
+	if err != nil {
 		logger.Println("InviteAsFriend failed:", err)
 		w.WriteHeader(http.StatusInternalServerError)
 		return
 	}
 
+	if newid == nil {
+		// 이미 보낸 초대 요청
+		return
+	}
+
 	ivdoc.Id = newid.(primitive.ObjectID)
 	if !ivdoc.Blocked {
 		iv.wsh.SendUpstreamMessage(&wshandler.UpstreamMessage{
diff --git a/go.mod b/go.mod
index 7c33429..602ca57 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/go-redis/redis/v8 v8.11.5
 	github.com/gorilla/websocket v1.5.0
 	go.mongodb.org/mongo-driver v1.11.7
-	repositories.action2quare.com/ayo/gocommon v0.0.0-20231116105647-72a62b678f83
+	repositories.action2quare.com/ayo/gocommon v0.0.0-20240122081445-b100148f54a3
 )
 
 require (
diff --git a/go.sum b/go.sum
index 3a313c1..c39b984 100644
--- a/go.sum
+++ b/go.sum
@@ -106,3 +106,5 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 repositories.action2quare.com/ayo/gocommon v0.0.0-20231116105647-72a62b678f83 h1:0X/ZTLb71JQ+ksZyPdLkxAHz9nDTT+/qRjV/zYBzlMc=
 repositories.action2quare.com/ayo/gocommon v0.0.0-20231116105647-72a62b678f83/go.mod h1:XvklTTSvQX5uviivGBcZo8eIL+mV94W2e4uBBXcT5JY=
+repositories.action2quare.com/ayo/gocommon v0.0.0-20240122081445-b100148f54a3 h1:gf07Uv+kkrGj2uI4gEY3lEDdxrsoAoESUG0YS0guYjg=
+repositories.action2quare.com/ayo/gocommon v0.0.0-20240122081445-b100148f54a3/go.mod h1:Gb418rT96M3K7L/XMPzp8IJj4UXVunq7dZzrxsMBz/8=