diff --git a/Makefile b/Makefile
index cb0e4f0..c068772 100644
--- a/Makefile
+++ b/Makefile
@@ -37,7 +37,7 @@ stylecheck:
 
 coverage:
 	rm -rf cover/
-	nosetests tests/test_Direct.py --with-coverage --cover-package=email2pdf --cover-erase --cover-html
+	nosetests tests/test_Direct*.py --with-coverage --cover-package=email2pdf --cover-erase --cover-html
 	open cover/email2pdf.html
 
 alltests: unittest stylecheck coverage