diff --git a/src/frontends/Dialogs.cpp b/src/frontends/Dialogs.cpp
index 3032f0d901..6a8d9b582c 100644
--- a/src/frontends/Dialogs.cpp
+++ b/src/frontends/Dialogs.cpp
@@ -15,9 +15,6 @@
 #include "Dialogs.h"
 #include "Dialog.h"
 
-#include <boost/signal.hpp>
-#include <boost/bind.hpp>
-
 using std::string;
 
 namespace lyx {
diff --git a/src/frontends/Dialogs.h b/src/frontends/Dialogs.h
index f74bcc9960..c238294df4 100644
--- a/src/frontends/Dialogs.h
+++ b/src/frontends/Dialogs.h
@@ -13,9 +13,10 @@
 #ifndef DIALOGS_H
 #define DIALOGS_H
 
-#include <boost/signal.hpp>
+#include <boost/shared_ptr.hpp>
 
 #include <map>
+#include <string>
 
 namespace lyx {
 
@@ -116,9 +117,6 @@ private:
 	/// flag against a race condition due to multiclicks in Qt frontend,
 	/// see bug #1119
 	bool in_show_;
-
-	///
-	boost::signals::connection connection_;
 };
 
 } // namespace frontend