diff --git a/.tool/lint b/.tool/lint
index c629f766..06dae83f 100755
--- a/.tool/lint
+++ b/.tool/lint
@@ -14,6 +14,7 @@ for d in $(find . -type d -not -iwholename '*.git*' -a -not -iname '.tool' -a -n
 		--disable=gotype \
 		--disable=gas \
 		--cyclo-over=50 \
+		--dupl-threshold=100 \
 		--tests \
 		--deadline=30s "${d}"
 done