diff --git a/schema/validator.go b/schema/validator.go
index 432e7b992..0fe18d6d6 100644
--- a/schema/validator.go
+++ b/schema/validator.go
@@ -111,7 +111,9 @@ func validateManifestDescendants(r io.Reader) error {
 
 	for _, layer := range header.Layers {
 		if layer.MediaType != string(v1.MediaTypeImageLayer) &&
-			layer.MediaType != string(v1.MediaTypeImageLayerNonDistributable) {
+			layer.MediaType != string(v1.MediaTypeImageLayerGzip) &&
+			layer.MediaType != string(v1.MediaTypeImageLayerNonDistributable) &&
+			layer.MediaType != string(v1.MediaTypeImageLayerNonDistributableGzip) {
 			fmt.Printf("warning: layer %s has an unknown media type: %s\n", layer.Digest, layer.MediaType)
 		}
 	}