diff --git a/src/libCom/fdmgr/fdManager.h b/src/libCom/fdmgr/fdManager.h
index 3ffc23d04..c1bd2825a 100644
--- a/src/libCom/fdmgr/fdManager.h
+++ b/src/libCom/fdmgr/fdManager.h
@@ -41,6 +41,7 @@
 #include "resourceLib.h"
 #include "tsStamp.h"
 #include "osiSock.h"
+#include "osiTimer.h"
 
 static const unsigned hashTableIndexBits = 8;