diff --git a/internal/config/types.go b/internal/config/types.go
index 783959a..f3532a4 100644
--- a/internal/config/types.go
+++ b/internal/config/types.go
@@ -22,12 +22,12 @@ type Server struct {
 
 // Service represents a service definition (from api.json)
 type Service struct {
-	Method      string                 `json:"method"`
-	Pattern     string                 `json:"path"`
-	Scope       [][]string             `json:"scope"`
-	Description string                 `json:"info"`
-	Input       map[string]*Parameter  `json:"in"`
-	Output      map[string]interface{} `json:"out"`
+	Method      string                `json:"method"`
+	Pattern     string                `json:"path"`
+	Scope       [][]string            `json:"scope"`
+	Description string                `json:"info"`
+	Input       map[string]*Parameter `json:"in"`
+	Output      map[string]*Parameter `json:"out"`
 
 	// references to url parameters
 	// format: '/uri/{param}'