diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c
index e788b4e9c5a..7a10cc913a5 100644
--- a/src/backend/postmaster/autovacuum.c
+++ b/src/backend/postmaster/autovacuum.c
@@ -122,6 +122,7 @@
 #include "catalog/catalog.h"
 #include "catalog/dependency.h"
 #include "catalog/namespace.h"
+#include "catalog/pg_am.h"
 #include "catalog/pg_database.h"
 #include "commands/dbcommands.h"
 #include "commands/vacuum.h"