diff --git a/hledger-lib/tests/doctests.hs b/hledger-lib/tests/doctests.hs
index 179be0bb6..f4f02fb68 100644
--- a/hledger-lib/tests/doctests.hs
+++ b/hledger-lib/tests/doctests.hs
@@ -1,7 +1,6 @@
 {-# LANGUAGE PackageImports #-}
 
 import Data.List
-import Data.Monoid
 import "Glob" System.FilePath.Glob
 import Test.DocTest