diff --git a/Guide/database.markdown b/Guide/database.markdown
index eeb0ba4b5..c6289037f 100644
--- a/Guide/database.markdown
+++ b/Guide/database.markdown
@@ -372,7 +372,7 @@ First, we must implement ToField to allow using a tuple of `(ProjectType, Int)`
 ```haskell
 -- Web/Types.hs
 import Database.PostgreSQL.Simple.ToField
-import Data.ByteString.Builder (byteString, char8)
+import Data.ByteString.Builder (char8)
 
 
 instance ToField (ProjectType, Int) where