diff --git a/src/EventThread.h b/src/EventThread.h
index ee248c599b627be3852b6824b5081b629585be31..37f5f35f38edcca0add866ef5f4ecda64a8bda56 100644
--- a/src/EventThread.h
+++ b/src/EventThread.h
@@ -10,6 +10,7 @@
 #include <sys/inotify.h>
 
 #include <boost/shared_ptr.hpp>
+#include <boost/scoped_ptr.hpp>
 #include <boost/thread.hpp>
 
 namespace PreProcessor_ns