diff --git a/pkg/common/types.go b/pkg/common/types.go
index b7dbe6fc0..2693f8910 100644
--- a/pkg/common/types.go
+++ b/pkg/common/types.go
@@ -115,7 +115,7 @@ type ChartFile struct {
 type Chart struct {
 	Name     string       `json:"name"`
 	Expander *Expander    `json:"expander"`
-	Schema   interface{}  `json:"schema"`
+	Schema   string       `json:"schema"`
 	Files    []*ChartFile `json:"files"`
 }