diff --git a/models/query.go b/models/query.go
index 2a06e93..a22d7e1 100644
--- a/models/query.go
+++ b/models/query.go
@@ -1,6 +1,6 @@
 package models
 
 type Query struct {
-	Depth  int    `json:"depth,omitempty"`
+	Depth  uint   `json:"depth,omitempty"`
 	RegExp string `json:"regExp,omitempty"`
 }