diff --git a/cc/lto.go b/cc/lto.go
index 820c1f0..df9ca0a 100644
--- a/cc/lto.go
+++ b/cc/lto.go
@@ -162,7 +162,7 @@
 }
 
 func GlobalThinLTO(ctx android.BaseModuleContext) bool {
-	return ctx.Config().IsEnvTrue("GLOBAL_THINLTO")
+	return !ctx.Config().IsEnvFalse("GLOBAL_THINLTO")
 }
 
 // Propagate lto requirements down from binaries