diff --git a/main.go b/main.go
index 2969c0b3b4d..9964238878f 100644
--- a/main.go
+++ b/main.go
@@ -75,6 +75,8 @@ func loadConfig(bidderInfos config.BidderInfos) (*config.Configuration, error) {
 		mspConfigFileName = "./msp_config/msp-prod"
 	case "msp_staging":
 		mspConfigFileName = "./msp_config/msp-stage"
+	case "msp_sandbox":
+		mspConfigFileName = "./msp_config/msp-sandbox"
 	}
 
 	config.SetupViper(v, mspConfigFileName, bidderInfos)