diff --git a/OpenVPN Adapter/OpenVPNError.h b/OpenVPN Adapter/OpenVPNError.h
index a8dd13c..02a3331 100644
--- a/OpenVPN Adapter/OpenVPNError.h	
+++ b/OpenVPN Adapter/OpenVPNError.h	
@@ -36,6 +36,7 @@ typedef NS_ERROR_ENUM(OpenVPNAdapterErrorDomain, OpenVPNAdapterError) {
     OpenVPNAdapterErrorBadSrcAddr,
     OpenVPNAdapterErrorCompressError,
     OpenVPNAdapterErrorResolveError,
+    OpenVPNAdapterErrorSocketSetupFailed,
     OpenVPNAdapterErrorSocketProtectError,
     OpenVPNAdapterErrorTUNReadError,
     OpenVPNAdapterErrorTUNWriteError,