diff --git a/src/attr.h b/src/attr.h
index b27a603..d904983 100644
--- a/src/attr.h
+++ b/src/attr.h
@@ -32,6 +32,7 @@ using namespace std;
 
 // Attributes that can be set for an EC
 // Keep in sync with attribute_names[] and short_names[]
+// Update "Allowed attribute names" in cscout.1
 // Consider updating workdb_schema, insert_eclass
 enum e_attribute {
 	is_declared_unused,	// Declared with __unused__ attribute