diff --git a/java/hiddenapi.go b/java/hiddenapi.go
index 983daa7..c7eac73 100644
--- a/java/hiddenapi.go
+++ b/java/hiddenapi.go
@@ -121,7 +121,7 @@
 	hiddenAPISaveDexInputs(ctx, dexInput)
 }
 
-const hiddenAPIOutputsKey = "hiddenAPIOutputsKey"
+var hiddenAPIOutputsKey = android.NewOnceKey("hiddenAPIOutputsKey")
 
 var hiddenAPIOutputsLock sync.Mutex