diff --git a/lib/server/size.js b/lib/server/size.js
index adea4ee1..f3dbca14 100644
--- a/lib/server/size.js
+++ b/lib/server/size.js
@@ -35,7 +35,7 @@
         }
         
         emitter.on('file', function(file, stat) {
-            total      += stat.size || 0;
+            total      += stat.size;
         });
         
         emitter.on('error', function(error) {