diff --git a/modules/gui/qt4/input_manager.cpp b/modules/gui/qt4/input_manager.cpp
index 2cda2c9bf585ddbd5c3775df002a7d73c5d0e510..9dc5ac7eacf6916d2a17fa7592d505c5c62453ea 100644
--- a/modules/gui/qt4/input_manager.cpp
+++ b/modules/gui/qt4/input_manager.cpp
@@ -958,7 +958,7 @@ MainInputManager::MainInputManager( intf_thread_t *_p_intf )
     repeat.addCallback( this, SLOT(notifyRepeatLoop(bool)) );
     loop.addCallback( this, SLOT(notifyRepeatLoop(bool)) );
 
-    volume.addCallback( this, SLOT(notifyVolume(int)) );
+    volume.addCallback( this, SLOT(notifyVolume(int64_t)) );
     mute.addCallback( this, SLOT(notifyMute(bool)) );
 
     /* Warn our embedded IM about input changes */
@@ -1217,7 +1217,7 @@ static int LeafToParent( vlc_object_t *p_this, const char *psz_var,
     return VLC_SUCCESS;
 }
 
-void MainInputManager::notifyVolume( int volume )
+void MainInputManager::notifyVolume( int64_t volume )
 {
     emit volumeChanged( volume / (float)AOUT_VOLUME_DEFAULT );
 }
diff --git a/modules/gui/qt4/input_manager.hpp b/modules/gui/qt4/input_manager.hpp
index fbc99a81808db0b5f20fe254eece37701ea68e64..ee41b4cc75a181347777c6f8bddffb4862881825 100644
--- a/modules/gui/qt4/input_manager.hpp
+++ b/modules/gui/qt4/input_manager.hpp
@@ -292,7 +292,7 @@ public slots:
 private slots:
     void notifyRandom( bool );
     void notifyRepeatLoop( bool );
-    void notifyVolume( int );
+    void notifyVolume( int64_t );
     void notifyMute( bool );
 signals:
     void inputChanged( input_thread_t * );