diff --git a/storage/csv/ha_tina.cc b/storage/csv/ha_tina.cc
index c5e53cb7354..9db78065bb3 100644
--- a/storage/csv/ha_tina.cc
+++ b/storage/csv/ha_tina.cc
@@ -143,6 +143,7 @@ static void init_tina_psi_keys(void)
 static const char *ha_tina_exts[] = {
   CSV_EXT,
   CSM_EXT,
+  CSN_EXT,
   NullS
 };