diff --git a/src/Graphics/Svg/Core.hs b/src/Graphics/Svg/Core.hs
index 74cef07..29979d2 100644
--- a/src/Graphics/Svg/Core.hs
+++ b/src/Graphics/Svg/Core.hs
@@ -2,6 +2,7 @@
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE TypeFamilies      #-}
+{-# LANGUAGE TypeOperators     #-}
 
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