diff --git a/internal/util/indexparamcheck/conf_adapter.go b/internal/util/indexparamcheck/conf_adapter.go
index 7ec7417fe1..ab1d534067 100644
--- a/internal/util/indexparamcheck/conf_adapter.go
+++ b/internal/util/indexparamcheck/conf_adapter.go
@@ -233,6 +233,7 @@ func newIVFPQConfAdapter() *IVFPQConfAdapter {
 	return &IVFPQConfAdapter{}
 }
 
+// IVFSQConfAdapter checks if a IVF_SQ index can be built.
 type IVFSQConfAdapter struct {
 	IVFConfAdapter
 }