diff --git a/Makefile b/Makefile
index 19bc840b4b4776f598351c00b78e4dc8cb52ad68..4c4838fee87a588d75a4aab73e2e596c119bef25 100644
--- a/Makefile
+++ b/Makefile
@@ -32,7 +32,7 @@ $(SUB_PDF_FILES): $(SUB_TEX_FILES)
 
 
 clean: tidy
-	for %%a in ($(foreach D,. $(SUBDIRS), "$(D)\$(OUTDIR)")) do rd /s /q %%~a
+	for %%a in ($(foreach D,. $(SUBDIRS), "$(D)\$(OUTDIR)")) do if exist %%~a rmdir /s /q %%~a
 	if exist $(NAME).pdf del $(NAME).pdf
 
 tidy:
diff --git a/test.pdf b/test.pdf
deleted file mode 100644
index 9f1ad07eac5900f975f4c8a8ece7203e43afd622..0000000000000000000000000000000000000000
Binary files a/test.pdf and /dev/null differ