diff --git a/Makefile b/Makefile
index aaf7dbfade7660515be7aecf34aaaf898757c679..1bcaa4a8ea131e1b2858efeb3b8dca26f360d9da 100644
--- a/Makefile
+++ b/Makefile
@@ -14,4 +14,4 @@ lj_ns:
 
 clean:
 	@echo "Cleaning..."
-	rm -rf build lj_ns lj_ns.cpp dist pairs.egg-info kernels kernels.pdf
+	rm -rf build lj_ns lj_ns.cpp dist pairs.egg-info functions functions.pdf