diff --git a/backend/conf/config.yml b/backend/conf/config.yml
index 9387a94a..756978f2 100644
--- a/backend/conf/config.yml
+++ b/backend/conf/config.yml
@@ -6,7 +6,7 @@ mongo:
   db: crawlab_test
   username: ""
   password: ""
-  authSource: "admin"
+  auth-source: "admin"
 redis:
   address: localhost
   password: ""
diff --git a/backend/database/mongo.go b/backend/database/mongo.go
index 6b155791..8e479633 100644
--- a/backend/database/mongo.go
+++ b/backend/database/mongo.go
@@ -35,7 +35,7 @@ func InitMongo() error {
 	var mongoDb = viper.GetString("mongo.db")
 	var mongoUsername = viper.GetString("mongo.username")
 	var mongoPassword = viper.GetString("mongo.password")
-	var mongoAuth = viper.GetString("mongo.authSource")
+	var mongoAuth = viper.GetString("mongo.auth-source")
 
 	if Session == nil {
 		var uri string