diff --git a/src/tinycss/tests/fonts3.py b/src/tinycss/tests/fonts3.py
index 3493fb3692..dc9b902715 100644
--- a/src/tinycss/tests/fonts3.py
+++ b/src/tinycss/tests/fonts3.py
@@ -41,6 +41,7 @@ class TestFonts3(BaseTest):
                 r'Hawaii\ 5-0': ['Hawaii 5-0'],
                 r'"X \"Y"': ['X "Y'],
                 'A B, C D, "E", serif': ['A B', 'C D', 'E', 'serif'],
+                '': [],
         }.iteritems():
             self.ae(q, parse_font_family(raw))
         for single in ('serif', 'sans-serif', 'A B C'):