diff --git a/.gitignore b/.gitignore
index 1c4034cfee8d840b1acb941b6e423dd55e175c27..8c9e8201080dbedbb8d4bd0578cb808e7964f21d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 test_tmp*
 ackley_mc
 ackley_mc.exe
+*.csv
diff --git a/Makefile b/Makefile
index 1dee0922d8e504b4f45e4bed3745123550001dba..2a18733e1c7b10b1f3b02f809e8adf72b27a268a 100644
--- a/Makefile
+++ b/Makefile
@@ -34,6 +34,7 @@ clean:
 	$(GO) clean
 	rm -rf bin/*
 	rm -rf examples/*.csv
+	rm -rf *.csv
 	rm -rf */*_delme.*
 	rm -rf */test_tmp*
 	rm -rf /tmp/go-build[0-9]*