diff --git a/lib/forcegraph.js b/lib/forcegraph.js
index ff94495..cb9d05e 100644
--- a/lib/forcegraph.js
+++ b/lib/forcegraph.js
@@ -701,11 +701,12 @@ define(["d3", "helper"], function (d3, helper) {
         var buffer = document.createElement("canvas");
         var r = window.devicePixelRatio;
         var bctx = buffer.getContext("2d");
-        bctx.font = "11px Roboto";
+        bctx.font = "11px Roboto, sans-serif";
         var width = bctx.measureText(name).width;
         var scale = zoomBehavior.scaleExtent()[1] * r;
         buffer.width = (width + 2 * lineWidth) * scale;
         buffer.height = (16 + 2 * lineWidth) * scale;
+        bctx.font = "11px Roboto, sans-serif";
         bctx.scale(scale, scale);
         bctx.textBaseline = "middle";
         bctx.textAlign = "center";
diff --git a/lib/map/labelslayer.js b/lib/map/labelslayer.js
index d54c4af..e525d65 100644
--- a/lib/map/labelslayer.js
+++ b/lib/map/labelslayer.js
@@ -11,7 +11,7 @@ define(["leaflet", "rbush"],
       ["center", "ideographic", 2 / 8],
       ["right", "ideographic", 3 / 8]];
 
-    var fontFamily = "Roboto";
+    var fontFamily = "Roboto, sans-serif";
     var nodeRadius = 4;
 
     var ctx = document.createElement("canvas").getContext("2d");