diff --git a/tazblog.cabal b/tazblog.cabal
index 9220241ba..9e41ad5d7 100644
--- a/tazblog.cabal
+++ b/tazblog.cabal
@@ -12,6 +12,7 @@ cabal-version:       >= 1.10
 library
   hs-source-dirs: src
   default-language: Haskell2010
+  ghc-options: -W
   exposed-modules: Blog, BlogDB, Locales, Server, RSS
   build-depends: base,
                  bytestring,