diff --git a/daemon/face/tcp-channel.cpp b/daemon/face/tcp-channel.cpp
index 54a620c..7ffb0f3 100644
--- a/daemon/face/tcp-channel.cpp
+++ b/daemon/face/tcp-channel.cpp
@@ -113,7 +113,7 @@
       options.allowCongestionMarking = m_wantCongestionMarking;
     }
     else {
-      options.allowCongestionMarking = params.wantCongestionMarking;
+      options.allowCongestionMarking = bool(params.wantCongestionMarking);
     }
 
     if (params.baseCongestionMarkingInterval) {