diff --git a/browser/components/preferences/in-content/tests/siteData/browser.ini b/browser/components/preferences/in-content/tests/siteData/browser.ini
index aab2bfd5bb95..cbf38ae6bc64 100644
--- a/browser/components/preferences/in-content/tests/siteData/browser.ini
+++ b/browser/components/preferences/in-content/tests/siteData/browser.ini
@@ -9,6 +9,7 @@ support-files =
 
 [browser_clearSiteData.js]
 [browser_siteData.js]
+skip-if = debug && ((os == 'win') || (os == 'linux')) # Bug 1533681
 [browser_siteData2.js]
 [browser_siteData3.js]
 [browser_siteData_multi_select.js]