diff --git a/FastGithub/IPv4CIDR.cs b/FastGithub/IPv4CIDR.cs
index 9fc1e31..823f10a 100644
--- a/FastGithub/IPv4CIDR.cs
+++ b/FastGithub/IPv4CIDR.cs
@@ -26,7 +26,8 @@ namespace FastGithub
         {
             for (var i = 0; i < this.Size; i++)
             {
-                yield return Add(this.IPAddress, i);
+                var value = i;
+                yield return Add(this.IPAddress, value);
             }
         }