diff --git a/android/variable.go b/android/variable.go
index 14094e2..3e637fe 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -555,6 +555,7 @@
 
 type PartitionQualifiedVariablesType struct {
 	BuildingImage               bool   `json:",omitempty"`
+	PrebuiltImage               bool   `json:",omitempty"`
 	BoardErofsCompressor        string `json:",omitempty"`
 	BoardErofsCompressHints     string `json:",omitempty"`
 	BoardErofsPclusterSize      string `json:",omitempty"`