diff --git a/src/TracerouteListener.cpp b/src/TracerouteListener.cpp
index a84e313..7da3489 100644
--- a/src/TracerouteListener.cpp
+++ b/src/TracerouteListener.cpp
@@ -51,8 +51,8 @@ void TracerouteListener::listen(class TracerouteEvents &tracerouteEvents) {
   activeFds = (int*)malloc(eventCount * sizeof(int));
 
   for (i=0;i<FD_COUNT;i++) {
-    if ((fds[i].revents & POLLIN == POLLIN) ||
-        (fds[i].revents & POLLPRI == POLLPRI)) {
+    if (((fds[i].revents & POLLIN) == POLLIN) ||
+        ((fds[i].revents & POLLPRI) == POLLPRI)) {
       activeFds[index++] = fds[i].fd;
     }
   }