diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c
index ac0242c9d3..cef8e230a9 100644
--- a/src/backend/postmaster/autovacuum.c
+++ b/src/backend/postmaster/autovacuum.c
@@ -1933,6 +1933,9 @@ get_database_list(void)
 
 	CommitTransactionCommand();
 
+	/* Be sure to restore caller's memory context */
+	MemoryContextSwitchTo(resultcxt);
+
 	return dblist;
 }