diff --git a/src/include/catalog/pg_db_role_setting.h b/src/include/catalog/pg_db_role_setting.h
index 649f5c42818..15c72acc40a 100644
--- a/src/include/catalog/pg_db_role_setting.h
+++ b/src/include/catalog/pg_db_role_setting.h
@@ -23,6 +23,7 @@
 
 #include "utils/guc.h"
 #include "utils/relcache.h"
+#include "utils/snapshot.h"
 
 /* ----------------
  *		pg_db_role_setting definition.	cpp turns this into