diff --git a/internal/config/config.go b/internal/config/config.go
index 4b7a92fdd..a059981b9 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -260,9 +260,9 @@ func (config *Dendrite) Derive() error {
 	}
 
 	// Load application service configuration files
-	//if err := loadAppServices(config); err != nil {
-	//	return err
-	//}
+	if err := loadAppServices(&config.AppServiceAPI, &config.Derived); err != nil {
+		return err
+	}
 
 	return nil
 }