diff --git a/test/runtests.sh b/test/runtests.sh
index 1244e075e..5dde55629 100755
--- a/test/runtests.sh
+++ b/test/runtests.sh
@@ -17,7 +17,7 @@ function makePath {
 DEBUG=false
 if [ -z "$FX_EXECUTABLE" ]; then
 	if [ "`uname`" == "Darwin" ]; then
-		FX_EXECUTABLE="/Applications/Firefox.app/Contents/MacOS/firefox"
+		FX_EXECUTABLE="/Applications/Firefox Unbranded.app/Contents/MacOS/firefox"
 	else
 		FX_EXECUTABLE="firefox"
 	fi