diff --git a/java/system_modules.go b/java/system_modules.go
index 7394fd5..5cc546d 100644
--- a/java/system_modules.go
+++ b/java/system_modules.go
@@ -192,6 +192,7 @@
 
 			fmt.Fprintln(w, name+":", "$("+makevar+")")
 			fmt.Fprintln(w, ".PHONY:", name)
+			// TODO(b/151177513): Licenses: Doesn't go through base_rules. May have to generate meta_lic and meta_module here.
 		},
 	}
 }