diff --git a/GenerateCPPCSP.hs b/GenerateCPPCSP.hs
index 2ec83ec..af6d0fc 100644
--- a/GenerateCPPCSP.hs
+++ b/GenerateCPPCSP.hs
@@ -1,5 +1,5 @@
 -- | Generate C code from the mangled AST.
-module GenerateCPPCSP where
+module GenerateCPPCSP (generateCPPCSP) where
 
 import Data.Char
 import Data.List
diff --git a/Makefile b/Makefile
index 01a03f8..a8f5d0d 100644
--- a/Makefile
+++ b/Makefile
@@ -28,7 +28,7 @@ sources = \
 # profile_opts = -prof -auto-all
 
 $(targets): $(sources)
-	ghc -fglasgow-exts -fallow-undecidable-instances $(profile_opts) -o tock --make Main
+	ghc -fglasgow-exts -fallow-undecidable-instances -fwarn-unused-binds $(profile_opts) -o tock --make Main
 
 CFLAGS = \
 	-O2 \