diff --git a/src/Nancy/Extensions/CollectionExtensions.cs b/src/Nancy/Extensions/CollectionExtensions.cs
index 605ffed977..1c28a38d06 100644
--- a/src/Nancy/Extensions/CollectionExtensions.cs
+++ b/src/Nancy/Extensions/CollectionExtensions.cs
@@ -17,7 +17,15 @@ public static class CollectionExtensions
         /// <returns>An <see cref="IDictionary{TKey,TValue}"/> instance.</returns>
         public static IDictionary<string, IEnumerable<string>> ToDictionary(this NameValueCollection source)
         {
-            return source.AllKeys.ToDictionary<string, string, IEnumerable<string>>(key => key, source.GetValues);
+            return source.AllKeys.ToDictionary<string, string, IEnumerable<string>>(key => key, key =>
+            {
+                var ret = source.GetValues(key);
+                if (key == "Cookie")
+                {
+                    return new string[] { string.Join(string.Empty, ret) };
+                }
+                return ret;
+            });
         }
 
         /// <summary>
@@ -85,4 +93,4 @@ public static IEnumerable<TSource> DistinctBy<TSource, TKey>(this IEnumerable<TS
             }
         }
     }
-}
\ No newline at end of file
+}