diff --git a/src/Graphics/Static/Interpreter.hs b/src/Graphics/Static/Interpreter.hs
--- a/src/Graphics/Static/Interpreter.hs
+++ b/src/Graphics/Static/Interpreter.hs
@@ -154,7 +154,7 @@
 eval uniqId (Free (GlobalAlpha a1 c)) = do
   record [fromText uniqId, "Ctx.globalAlpha = (", jsDouble a1, ");"]
   eval uniqId c
-  
+
 eval uniqId (Free (GlobalCompositeOperation a1 c)) = do
   record [fromText uniqId, "Ctx.globalCompositeOperation = ('", jsComposite a1, "');"]
   eval uniqId c
@@ -188,7 +188,7 @@
   record ["var image_", jsInt i, " = new Image(); image_"
          , jsInt i, ".src = ('", fromText a1, "');"]
   eval uniqId (k i)
-  
+
 eval uniqId (Free (OnImageLoad a1 a2 c)) = do
   record ["image_", jsInt a1, ".onload = function() {", evalScript uniqId a2, "};"]
   eval uniqId c
@@ -283,4 +283,4 @@
   record [fromText uniqId, "Ctx.translate(", jsDouble a1, comma, jsDouble a2, ");"]
   eval uniqId c
 
-eval uniqId (Pure x) = return x
+eval _ (Pure x) = return x
diff --git a/static-canvas.cabal b/static-canvas.cabal
--- a/static-canvas.cabal
+++ b/static-canvas.cabal
@@ -1,5 +1,5 @@
 name:                static-canvas
-version:             0.2.0.2
+version:             0.2.0.3
 synopsis:            DSL to generate HTML5 Canvas javascript.
 description:
   A simple DSL for writing HTML5 Canvas in haskell and converting it
@@ -22,13 +22,13 @@
 cabal-version:       >=1.10
 
 library
-  ghc-options:         -Wall -rtsopts -O2
+  ghc-options:         -Wall
   exposed-modules:     Graphics.Static
                        Graphics.Static.ColorNames
   other-modules:       Graphics.Static.Types
                        Graphics.Static.Interpreter
                        Graphics.Static.Javascript
-  build-depends:       base >=4.5 && < 4.9,
+  build-depends:       base >=4.5 && < 4.10,
                        mtl >= 2.1 && < 2.3,
                        free >= 4.9 && < 4.13,
                        text >=0.11 && < 1.3,