diff --git a/Swagger.Net/Swagger/Extensions/SchemaExtensions.cs b/Swagger.Net/Swagger/Extensions/SchemaExtensions.cs
index ca1dcd0..6c9ec02 100644
--- a/Swagger.Net/Swagger/Extensions/SchemaExtensions.cs
+++ b/Swagger.Net/Swagger/Extensions/SchemaExtensions.cs
@@ -89,7 +89,10 @@ public static Schema WithDescriptionProperty(this Schema schema, JsonProperty js
                 return schema;
 
             var attrib = propInfo.GetCustomAttributes(false).OfType<SwaggerDescriptionAttribute>().FirstOrDefault();
-            schema.description = attrib?.Description;
+            var description = attrib?.Description;
+            if (description != null)
+                schema.description = description;
+
             return schema;
         }