diff --git a/tools/lint/common.h b/tools/lint/common.h
index 72ce1bd..ae37df2 100644
--- a/tools/lint/common.h
+++ b/tools/lint/common.h
@@ -50,6 +50,7 @@
 struct schema_features {
     char *mod_name;
     char **features;
+    ly_bool applied;
 };
 
 /**