diff --git a/data/CompState.hs b/data/CompState.hs
index 1e172ff..546083b 100644
--- a/data/CompState.hs
+++ b/data/CompState.hs
@@ -136,7 +136,7 @@ emptyState = CompState {
     csBackend = BackendC,
     csFrontend = FrontendOccam,
     csSanityCheck = False,
-    csUsageChecking = False, -- For now!  TODO turn this on by default
+    csUsageChecking = True,
     csVerboseLevel = 0,
     csOutputFile = "-",
     csKeepTemporaries = False,