diff --git a/examples/HDBC/MySQL/example.cabal b/examples/HDBC/MySQL/example.cabal
index c89fab97..d838d12b 100644
--- a/examples/HDBC/MySQL/example.cabal
+++ b/examples/HDBC/MySQL/example.cabal
@@ -35,3 +35,5 @@ executable example
     , time
   default-language:
     Haskell2010
+  ghc-options:
+    -Wall