diff --git a/lib/canvas.js b/lib/canvas.js
index e7565d9..4011ccb 100644
--- a/lib/canvas.js
+++ b/lib/canvas.js
@@ -41,6 +41,12 @@ exports.cairoVersion = cairoVersion;
 
 var cache = {};
 
+/**
+ * Font RegExp used by parseFont();
+ */
+
+var font = /^ *(?:(normal|bold|bolder|lighter|[1-9](?:00)) *)?(?:(normal|italic|oblique) *)?(\d+)(px|pt|pc|in|cm|mm|%) *((?:"([^"]+)"|[\w-]+)( *, *(?:"([^"]+)"|[\w-]+))*)/;
+
 /**
  * Buffer extensions.
  */
@@ -76,7 +82,7 @@ function normalizedColor(prop) {
 exports.parseFont = function(str){
   if (cache[str]) return cache[str];
   var obj = {}
-    , captures = /^ *(?:(normal|bold|bolder|lighter|[1-9](?:00)) *)?(?:(normal|italic|oblique) *)?(\d+)(px|pt|pc|in|cm|mm|%) *((?:"([^"]+)"|[\w-]+)( *, *(?:"([^"]+)"|[\w-]+))*)/.exec(str);
+    , captures = font.exec(str);
   if (!captures) return;
   obj.weight = captures[1] || 'normal';
   obj.style = captures[2] || 'normal';