diff --git a/fbzmq/zmq/SocketMonitor.h b/fbzmq/zmq/SocketMonitor.h
index e9c03d689..399b9c9f2 100644
--- a/fbzmq/zmq/SocketMonitor.h
+++ b/fbzmq/zmq/SocketMonitor.h
@@ -88,7 +88,7 @@ class SocketMonitor {
   /**
    * event object passed down the PAIR socket to monitor class
    */
-  using EventT = struct {
+  struct EventT {
     uint16_t event;
     int32_t data;
   };