diff --git a/samples/BidirectionChat/csharp/extensions.csproj b/samples/BidirectionChat/csharp/extensions.csproj
index d2aa9134..20e016e6 100644
--- a/samples/BidirectionChat/csharp/extensions.csproj
+++ b/samples/BidirectionChat/csharp/extensions.csproj
@@ -6,7 +6,7 @@
-
+