diff --git a/server/model/config.go b/server/model/config.go
index e28c26f1c..ff5a4a0bb 100644
--- a/server/model/config.go
+++ b/server/model/config.go
@@ -35,6 +35,6 @@ type Config struct {
 
 // PipelineConfig is the n:n relation between Pipeline and Config
 type PipelineConfig struct {
-	ConfigID   int64 `json:"-"   xorm:"UNIQUE(s) NOT NULL 'config_id'"`
-	PipelineID int64 `json:"-"   xorm:"UNIQUE(s) NOT NULL 'pipeline_id'"`
+	ConfigID   int64 `json:"-"   xorm:"NOT NULL 'config_id'"`
+	PipelineID int64 `json:"-"   xorm:"NOT NULL 'pipeline_id'"`
 }