diff --git a/test/unit/api_spec.js b/test/unit/api_spec.js
index 666ada005..7662c405e 100644
--- a/test/unit/api_spec.js
+++ b/test/unit/api_spec.js
@@ -3908,7 +3908,7 @@ Caron Broadcasting, Inc., an Ohio corporation (“Lessee”).`)
             checkedCopyLocalImage = true;
             // Ensure that the image was copied in the main-thread, rather
             // than being re-parsed in the worker-thread (which is slower).
-            expect(statsOverall).toBeLessThan(firstStatsOverall / 5);
+            expect(statsOverall).toBeLessThan(firstStatsOverall / 4);
           }
         }
       }