diff --git a/dom/ipc/tests/browser.ini b/dom/ipc/tests/browser.ini
index ee57fbffe8d8..b9c3be562224 100644
--- a/dom/ipc/tests/browser.ini
+++ b/dom/ipc/tests/browser.ini
@@ -19,4 +19,4 @@ skip-if = true || !e10s # This is an e10s only probe, but the test is currently
 skip-if = !e10s || (os == "win" && os_version == "10.0" && bits == 64 && debug) # This is an e10s only probe. Bug 1548274 - added disable on Windows10.
 [browser_ElapsedTime.js]
 support-files = elapsed_time.sjs
-skip-if = (debug && os == "linux" && os_version == "18.04") || (!debug && os == "win" && os_version == "10.0" and bits == 64) #Bug 1591344
+skip-if = (debug && os == "linux" && os_version == "18.04") || (!debug && os == "win" && os_version == "10.0" && bits == 64) #Bug 1591344