1 files changed, 12 insertions, 0 deletions

diff --git a/models/issues/label.go b/models/issues/label.go
index 667a608687..be97454e26 100644
--- a/models/issues/label.go
+++ b/models/issues/label.go
@@ -38,6 +38,10 @@ func (err ErrRepoLabelNotExist) Error() string {
 	return fmt.Sprintf("label does not exist [label_id: %d, repo_id: %d]", err.LabelID, err.RepoID)
 }
 
+func (err ErrRepoLabelNotExist) Unwrap() error {
+	return util.ErrNotExist
+}
+
 // ErrOrgLabelNotExist represents a "OrgLabelNotExist" kind of error.
 type ErrOrgLabelNotExist struct {
 	LabelID int64
@@ -54,6 +58,10 @@ func (err ErrOrgLabelNotExist) Error() string {
 	return fmt.Sprintf("label does not exist [label_id: %d, org_id: %d]", err.LabelID, err.OrgID)
 }
 
+func (err ErrOrgLabelNotExist) Unwrap() error {
+	return util.ErrNotExist
+}
+
 // ErrLabelNotExist represents a "LabelNotExist" kind of error.
 type ErrLabelNotExist struct {
 	LabelID int64
@@ -69,6 +77,10 @@ func (err ErrLabelNotExist) Error() string {
 	return fmt.Sprintf("label does not exist [label_id: %d]", err.LabelID)
 }
 
+func (err ErrLabelNotExist) Unwrap() error {
+	return util.ErrNotExist
+}
+
 // LabelColorPattern is a regexp witch can validate LabelColor
 var LabelColorPattern = regexp.MustCompile("^#?(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{3})$")