diff --git a/rb/lib/selenium/webdriver/firefox/bridge.rb b/rb/lib/selenium/webdriver/firefox/bridge.rb
index <HASH>..<HASH> 100644
--- a/rb/lib/selenium/webdriver/firefox/bridge.rb
+++ b/rb/lib/selenium/webdriver/firefox/bridge.rb
@@ -41,9 +41,9 @@ module Selenium
 
         def quit
           super
-          @launcher.quit
-
           nil
+        ensure
+          @launcher.quit
         end
 
         private
JariBakken: Make sure Firefox shutdown happens even if the RPC fails.

r<I>