diff --git a/test/functional/interface_rest.py b/test/functional/interface_rest.py
index 869bd5c2356..5017f77d18e 100755
--- a/test/functional/interface_rest.py
+++ b/test/functional/interface_rest.py
@@ -278,8 +278,9 @@ class RESTTest (BitcoinTestFramework):
         assert_equal(json_obj[0]['hash'], bb_hash)  # request/response hash should be the same
 
         # Check invalid uri (% symbol at the end of the request)
-        resp = self.test_rest_request(f"/headers/{bb_hash}%", ret_type=RetType.OBJ, status=400)
-        assert_equal(resp.read().decode('utf-8').rstrip(), "URI parsing failed, it likely contained RFC 3986 invalid characters")
+        for invalid_uri in [f"/headers/{bb_hash}%", f"/blockfilterheaders/basic/{bb_hash}%", "/mempool/contents.json?%"]:
+            resp = self.test_rest_request(invalid_uri, ret_type=RetType.OBJ, status=400)
+            assert_equal(resp.read().decode('utf-8').rstrip(), "URI parsing failed, it likely contained RFC 3986 invalid characters")
 
         # Compare with normal RPC block response
         rpc_block_json = self.nodes[0].getblock(bb_hash)