diff --git a/.gitignore b/.gitignore
index 609b440f..36eeb6b2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -51,3 +51,5 @@ prog/weaveexec/netcheck
 prog/weaveexec/docker*.tgz
 Vagrantfile.local
 test/tls/*.pem
+test/coverage
+test/coverage.*
diff --git a/Makefile b/Makefile
index 6adf7dea..ac9515bc 100644
--- a/Makefile
+++ b/Makefile
@@ -120,7 +120,7 @@ clean:
 	-$(SUDO) docker rmi $(IMAGES)
 	go clean -r ./...
 	rm -f $(EXES) $(IMAGES_UPTODATE) $(WEAVE_EXPORT)
-	rm -f test/tls/*.pem
+	rm -rf test/tls/*.pem test/coverage.* test/coverage
 
 build:
 	$(SUDO) go clean -i net