diff --git a/python/builder.go b/python/builder.go
index 36baecd..dc2d1f1 100644
--- a/python/builder.go
+++ b/python/builder.go
@@ -91,7 +91,7 @@
 
 	if !embeddedLauncher {
 		// the path of stub_template_host.txt from source tree.
-		template := android.PathForSource(ctx, stubTemplateHost)
+		template := android.PathForSource(ctx, StubTemplateHost)
 		implicits = append(implicits, template)
 
 		// intermediate output path for __main__.py