diff --git a/src/backend/commands/matview.c b/src/backend/commands/matview.c
index d5a10ad..d5e58ae 100644
--- a/src/backend/commands/matview.c
+++ b/src/backend/commands/matview.c
@@ -30,6 +30,7 @@
 #include "miscadmin.h"
 #include "parser/parse_relation.h"
 #include "rewrite/rewriteHandler.h"
+#include "storage/lmgr.h"
 #include "storage/smgr.h"
 #include "tcop/tcopprot.h"
 #include "utils/builtins.h"
@@ -243,6 +244,7 @@ ExecRefreshMatView(RefreshMatViewStmt *stmt, const char *queryString,
 	/* Create the transient table that will receive the regenerated data. */
 	OIDNewHeap = make_new_heap(matviewOid, tableSpace, concurrent,
 							   ExclusiveLock);
+	LockRelationOid(OIDNewHeap, AccessExclusiveLock);
 	dest = CreateTransientRelDestReceiver(OIDNewHeap);
 
 	/* Generate the data, if wanted. */