diff --git a/src/gui/components/cc_timer.cpp b/src/gui/components/cc_timer.cpp
index 11fa328f3..e57c7465d 100644
--- a/src/gui/components/cc_timer.cpp
+++ b/src/gui/components/cc_timer.cpp
@@ -125,7 +125,7 @@ void CComponentsTimer::initThread()
 			dprintf(DEBUG_DEBUG,"\033[33m[CComponentsTimer] [%s - %d] started thread ID:%ld \033[0m\n", __func__, __LINE__, pthread_self());
 
 		if (res == 0)
-			CNeutrinoApp::getInstance()->OnBeforeRestart.connect(sl_stop_timer);
+			CNeutrinoApp::getInstance()->OnBeforeRestart.connect(sigc::retype_return<void>(sl_stop_timer));
 	}
 }
 
diff --git a/src/gui/components/cc_timer.h b/src/gui/components/cc_timer.h
index 023168472..08e9895c8 100644
--- a/src/gui/components/cc_timer.h
+++ b/src/gui/components/cc_timer.h
@@ -30,6 +30,7 @@
 #endif
 
 #include <sigc++/signal.h>
+#include <sigc++/adaptors/retype_return.h>
 #include <OpenThreads/ScopedLock>
 #include <OpenThreads/Thread>
 #include <OpenThreads/Condition>
diff --git a/src/neutrino.h b/src/neutrino.h
index 6710dea30..a061aa253 100644
--- a/src/neutrino.h
+++ b/src/neutrino.h
@@ -228,7 +228,7 @@ public:
 	void stopPlayBack(bool lock = false);
 	bool adjustToChannelID(const t_channel_id channel_id);
 	//signal/event handler before restart of neutrino gui
-	sigc::signal<bool> OnBeforeRestart;
+	sigc::signal<void> OnBeforeRestart;
 	sigc::signal<void> OnShutDown;
 	sigc::signal<void> OnAfterSetupFonts;
 	void channelRezap();