diff --git a/routers/api/v1/repo/issue_subscription.go b/routers/api/v1/repo/issue_subscription.go
index 012dcda44f..2e3de8c744 100644
--- a/routers/api/v1/repo/issue_subscription.go
+++ b/routers/api/v1/repo/issue_subscription.go
@@ -48,40 +48,7 @@ func AddIssueSubscription(ctx *context.APIContext) {
 	//     description: User can only subscribe itself if he is no admin
 	//   "404":
 	//     description: Issue not found
-	issue, err := models.GetIssueByIndex(ctx.Repo.Repository.ID, ctx.ParamsInt64(":index"))
-	if err != nil {
-		if models.IsErrIssueNotExist(err) {
-			ctx.NotFound()
-		} else {
-			ctx.Error(500, "GetIssueByIndex", err)
-		}
-
-		return
-	}
-
-	user, err := models.GetUserByName(ctx.Params(":user"))
-	if err != nil {
-		if models.IsErrUserNotExist(err) {
-			ctx.NotFound()
-		} else {
-			ctx.Error(500, "GetUserByName", err)
-		}
-
-		return
-	}
-
-	//only admin and user for itself can change subscription
-	if user.ID != ctx.User.ID && !ctx.User.IsAdmin {
-		ctx.Error(403, "User", nil)
-		return
-	}
-
-	if err := models.CreateOrUpdateIssueWatch(user.ID, issue.ID, true); err != nil {
-		ctx.Error(500, "CreateOrUpdateIssueWatch", err)
-		return
-	}
-
-	ctx.Status(201)
+	setIssueSubscription(ctx, true)
 }
 
 // DelIssueSubscription Unsubscribe user from issue
@@ -122,6 +89,10 @@ func DelIssueSubscription(ctx *context.APIContext) {
 	//     description: User can only subscribe itself if he is no admin
 	//   "404":
 	//     description: Issue not found
+	setIssueSubscription(ctx, false)
+}
+
+func setIssueSubscription(ctx *context.APIContext, watch bool) {
 	issue, err := models.GetIssueByIndex(ctx.Repo.Repository.ID, ctx.ParamsInt64(":index"))
 	if err != nil {
 		if models.IsErrIssueNotExist(err) {
@@ -150,7 +121,7 @@ func DelIssueSubscription(ctx *context.APIContext) {
 		return
 	}
 
-	if err := models.CreateOrUpdateIssueWatch(user.ID, issue.ID, false); err != nil {
+	if err := models.CreateOrUpdateIssueWatch(user.ID, issue.ID, watch); err != nil {
 		ctx.Error(500, "CreateOrUpdateIssueWatch", err)
 		return
 	}