1 files changed, 1 insertions, 1 deletions
diff --git a/Mono.Nat/Upnp/Messages/Requests/CreatePortMappingMessage.cs b/Mono.Nat/Upnp/Messages/Requests/CreatePortMappingMessage.cs
index 217095e49..7d6844e32 100644
--- a/Mono.Nat/Upnp/Messages/Requests/CreatePortMappingMessage.cs
+++ b/Mono.Nat/Upnp/Messages/Requests/CreatePortMappingMessage.cs
@@ -57,7 +57,7 @@ namespace Mono.Nat.Upnp
             var culture = CultureInfo.InvariantCulture;
 
             var builder = new StringBuilder(256);
-            var writer = CreateWriter(builder);
+            XmlWriter writer = CreateWriter(builder);
 
             WriteFullElement(writer, "NewRemoteHost", string.Empty);
             WriteFullElement(writer, "NewExternalPort", this.mapping.PublicPort.ToString(culture));