diff --git a/daemon/common.hpp b/daemon/common.hpp
index fc37c02..3d1a53a 100644
--- a/daemon/common.hpp
+++ b/daemon/common.hpp
@@ -33,6 +33,7 @@
 using boost::shared_ptr;
 using boost::enable_shared_from_this;
 using boost::make_shared;
+using boost::static_pointer_cast;
 using boost::function;
 using boost::bind;