diff --git a/qsomap.py b/qsomap.py
index a7d3a7b..4be41b9 100755
--- a/qsomap.py
+++ b/qsomap.py
@@ -264,7 +264,7 @@ def render(ref_lat, ref_lon, output_stream):
 
             .dist_circle_label, .azimuth_line_label {
                 font-size: 3px;
-                font: sans-serif;
+                font-family: sans-serif;
                 text-anchor: middle;
             }