diff --git a/notifier/gitlab/gitlab.go b/notifier/gitlab/gitlab.go
index 33b7add..09201a6 100644
--- a/notifier/gitlab/gitlab.go
+++ b/notifier/gitlab/gitlab.go
@@ -1,8 +1,6 @@
 package gitlab
 
 import (
-	"fmt"
-
 	gitlab "github.com/xanzy/go-gitlab"
 )
 
@@ -23,25 +21,25 @@ type GitLab struct {
 
 // CreateMergeRequestNote is a wrapper of https://godoc.org/github.com/xanzy/go-gitlab#NotesService.CreateMergeRequestNote
 func (g *GitLab) CreateMergeRequestNote(mergeRequest int, opt *gitlab.CreateMergeRequestNoteOptions, options ...gitlab.OptionFunc) (*gitlab.Note, *gitlab.Response, error) {
-	return g.Client.Notes.CreateMergeRequestNote(fmt.Sprintf("%s/%s", g.namespace, g.project), mergeRequest, opt, options...)
+	return g.Client.Notes.CreateMergeRequestNote(g.project, mergeRequest, opt, options...)
 }
 
 // DeleteMergeRequestNote is a wrapper of https://godoc.org/github.com/xanzy/go-gitlab#NotesService.DeleteMergeRequestNote
 func (g *GitLab) DeleteMergeRequestNote(mergeRequest, note int, options ...gitlab.OptionFunc) (*gitlab.Response, error) {
-	return g.Client.Notes.DeleteMergeRequestNote(fmt.Sprintf("%s/%s", g.namespace, g.project), mergeRequest, note, options...)
+	return g.Client.Notes.DeleteMergeRequestNote(g.project, mergeRequest, note, options...)
 }
 
 // ListMergeRequestNotes is a wrapper of https://godoc.org/github.com/xanzy/go-gitlab#NotesService.ListMergeRequestNotes
 func (g *GitLab) ListMergeRequestNotes(mergeRequest int, opt *gitlab.ListMergeRequestNotesOptions, options ...gitlab.OptionFunc) ([]*gitlab.Note, *gitlab.Response, error) {
-	return g.Client.Notes.ListMergeRequestNotes(fmt.Sprintf("%s/%s", g.namespace, g.project), mergeRequest, opt, options...)
+	return g.Client.Notes.ListMergeRequestNotes(g.project, mergeRequest, opt, options...)
 }
 
 // PostCommitComment is a wrapper of https://godoc.org/github.com/xanzy/go-gitlab#CommitsService.PostCommitComment
 func (g *GitLab) PostCommitComment(sha string, opt *gitlab.PostCommitCommentOptions, options ...gitlab.OptionFunc) (*gitlab.CommitComment, *gitlab.Response, error) {
-	return g.Client.Commits.PostCommitComment(fmt.Sprintf("%s/%s", g.namespace, g.project), sha, opt, options...)
+	return g.Client.Commits.PostCommitComment(g.project, sha, opt, options...)
 }
 
 // ListCommits is a wrapper of https://godoc.org/github.com/xanzy/go-gitlab#CommitsService.ListCommits
 func (g *GitLab) ListCommits(opt *gitlab.ListCommitsOptions, options ...gitlab.OptionFunc) ([]*gitlab.Commit, *gitlab.Response, error) {
-	return g.Client.Commits.ListCommits(fmt.Sprintf("%s/%s", g.namespace, g.project), opt, options...)
+	return g.Client.Commits.ListCommits(g.project, opt, options...)
 }