diff --git a/src/unix/Stack/DefaultColorWhen.hs b/src/unix/Stack/DefaultColorWhen.hs
index 425859f704..72c09b307b 100644
--- a/src/unix/Stack/DefaultColorWhen.hs
+++ b/src/unix/Stack/DefaultColorWhen.hs
@@ -5,7 +5,8 @@ module Stack.DefaultColorWhen
   ( defaultColorWhen
   ) where
 
-import Stack.Types.Runner (ColorWhen (ColorAuto))
+import Stack.Types.Runner (ColorWhen (ColorAuto, ColorNever))
+import System.Environment (lookupEnv)
 
 -- |The default adopts the standard proposed at http://no-color.org/, that color
 -- should not be added by default if the @NO_COLOR@ environment variable is