diff --git a/src/canopy/canopy.fs b/src/canopy/canopy.fs
index e2b33c16..3ff7ed00 100644
--- a/src/canopy/canopy.fs
+++ b/src/canopy/canopy.fs
@@ -889,6 +889,8 @@ let start b =
           options.BrowserExecutableLocation <- path
           new FirefoxDriver(firefoxDriverService (), options, TimeSpan.FromSeconds(elementTimeout)) :> IWebDriver
         | FirefoxWithUserAgent userAgent -> firefoxWithUserAgent userAgent
+        | FirefoxWithOptions options ->
+            new FirefoxDriver(firefoxDriverService (), options, TimeSpan.FromSeconds(elementTimeout)) :> IWebDriver
         | FirefoxWithPathAndTimeSpan(path, timespan) -> 
           let options = new Firefox.FirefoxOptions()
           options.BrowserExecutableLocation <- path
diff --git a/src/canopy/types.fs b/src/canopy/types.fs
index 681b9aee..2f2fb26c 100644
--- a/src/canopy/types.fs
+++ b/src/canopy/types.fs
@@ -47,6 +47,7 @@ type BrowserStartMode =
     | FirefoxWithUserAgent of string
     | FirefoxWithPathAndTimeSpan of string * TimeSpan
     | FirefoxWithProfileAndTimeSpan of Firefox.FirefoxProfile * TimeSpan
+    | FirefoxWithOptions of Firefox.FirefoxOptions
     | FirefoxHeadless
     | IE
     | IEWithOptions of IE.InternetExplorerOptions