diff --git a/dom/indexedDB/test/browser_forgetThisSite.js b/dom/indexedDB/test/browser_forgetThisSite.js
index 22f2d0c1aa4e..4095d48c94ed 100644
--- a/dom/indexedDB/test/browser_forgetThisSite.js
+++ b/dom/indexedDB/test/browser_forgetThisSite.js
@@ -20,6 +20,7 @@ const testPageURL4 = "http://" + domains[1] + getPath;
 
 function test()
 {
+  requestLongerTimeout(2);
   waitForExplicitFinish();
   // Avoids the prompt
   setPermission(testPageURL1, "indexedDB", "unknown");