diff --git a/src/dpp/socketengines/poll.cpp b/src/dpp/socketengines/poll.cpp
index f08acef0..61c98daa 100644
--- a/src/dpp/socketengines/poll.cpp
+++ b/src/dpp/socketengines/poll.cpp
@@ -19,6 +19,7 @@
  *
  ************************************************************************************/

+#include <dpp/cluster.h>
 #include <dpp/socketengine.h>
 #include <dpp/exception.h>
 #include <vector>