diff --git a/contrib/pageinspect/hashfuncs.c b/contrib/pageinspect/hashfuncs.c
index f43f0928b1..59af47ffe7 100644
--- a/contrib/pageinspect/hashfuncs.c
+++ b/contrib/pageinspect/hashfuncs.c
@@ -27,6 +27,7 @@ PG_FUNCTION_INFO_V1(hash_page_items);
 PG_FUNCTION_INFO_V1(hash_bitmap_info);
 PG_FUNCTION_INFO_V1(hash_metapage_info);
 
+#define IS_INDEX(r) ((r)->rd_rel->relkind == RELKIND_INDEX)
 #define IS_HASH(r) ((r)->rd_rel->relam == HASH_AM_OID)
 
 /* ------------------------------------------------
@@ -415,7 +416,7 @@ hash_bitmap_info(PG_FUNCTION_ARGS)
 
 	indexRel = index_open(indexRelid, AccessShareLock);
 
-	if (!IS_HASH(indexRel))
+	if (!IS_INDEX(indexRel) || !IS_HASH(indexRel))
 		ereport(ERROR,
 				(errcode(ERRCODE_WRONG_OBJECT_TYPE),
 				 errmsg("\"%s\" is not a %s index",