diff --git a/test/it/size.test.html b/test/it/size.test.html
index ec700d1..273251a 100644
--- a/test/it/size.test.html
+++ b/test/it/size.test.html
@@ -61,7 +61,7 @@
             setTimeout(resolve, 1000);
           });
           expect(transferSize).to.be.greaterThan(0, 'the file should not be empty');
-          expect(transferSize).to.be.lessThan(17 * 1024, 'we limit the size of the file to 17KB');
+          expect(transferSize).to.be.lessThan(20 * 1024, 'we limit the size of the file to 20KB');
 
         });