diff --git a/doc/tutorial/tutorial.cabal b/doc/tutorial/tutorial.cabal
index 3c7d52c1..2fa5d5d7 100644
--- a/doc/tutorial/tutorial.cabal
+++ b/doc/tutorial/tutorial.cabal
@@ -54,6 +54,7 @@ test-suite spec
   default-language: Haskell2010
   hs-source-dirs: test
   main-is: Spec.hs
+  other-modules: JavascriptSpec
   build-depends: base == 4.*
                , tutorial
                , hspec