diff --git a/.ghci b/.ghci
index e16d802..a3e9c13 100644
--- a/.ghci
+++ b/.ghci
@@ -5,4 +5,4 @@
 :set -Wall
 :set -fno-warn-unused-imports
 :set -fno-warn-unused-binds
-
+:set -fno-warn-unused-do-bind
diff --git a/course.cabal b/course.cabal
index eb88bcd..ac8e886 100644
--- a/course.cabal
+++ b/course.cabal
@@ -31,6 +31,7 @@ Library
   GHC-Options:      -Wall
                     -fno-warn-unused-imports
                     -fno-warn-unused-binds
+                    -fno-warn-unused-do-bind
 
   Hs-Source-Dirs:   src