diff --git a/lib/cpp/src/server/TNonblockingServer.cpp b/lib/cpp/src/server/TNonblockingServer.cpp
index 8f5a9f3..69ae235 100644
--- a/lib/cpp/src/server/TNonblockingServer.cpp
+++ b/lib/cpp/src/server/TNonblockingServer.cpp
@@ -602,6 +602,7 @@
  * connections on fd and assign TConnection objects to handle those requests.
  */
 void TNonblockingServer::handleEvent(int fd, short which) {
+  (void) which;
   // Make sure that libevent didn't mess up the socket handles
   assert(fd == serverSocket_);