diff --git a/java/droidstubs.go b/java/droidstubs.go
index bb2388f..77b5658 100644
--- a/java/droidstubs.go
+++ b/java/droidstubs.go
@@ -512,8 +512,7 @@
 	cmd.BuiltTool("metalava").ImplicitTool(ctx.Config().HostJavaToolPath(ctx, "metalava.jar")).
 		Flag(config.JavacVmFlags).
 		Flag("-J--add-opens=java.base/java.util=ALL-UNNAMED").
-		FlagWithArg("-encoding ", "UTF-8").
-		FlagWithArg("-source ", javaVersion.String()).
+		FlagWithArg("--java-source ", javaVersion.String()).
 		FlagWithRspFileInputList("@", android.PathForModuleOut(ctx, "metalava.rsp"), srcs).
 		FlagWithInput("@", srcJarList)