diff --git a/TwitterBootstrapHelpers/Layout/Span.cs b/TwitterBootstrapHelpers/Layout/Span.cs
index 6bdc16f..b228db3 100644
--- a/TwitterBootstrapHelpers/Layout/Span.cs
+++ b/TwitterBootstrapHelpers/Layout/Span.cs
@@ -17,6 +17,7 @@ public Span(ViewContext viewContext, int spanWidth)
         public Span(ViewContext viewContext, int spanWidth, int? offset)
             : base("div", viewContext)
         {
+            SpanWidth = spanWidth;
             Offset = offset;
         }