diff --git a/ChangeLog b/ChangeLog
index 5a957d5152..274c16a734 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2005-11-06  Sven Neumann  <sven@gimp.org>
+
+	* modules/controller_midi.c (midi_set_device): corrected casting.
+
 2005-11-05  Sven Neumann  <sven@gimp.org>
 
 	* app/Makefile.am: removed unused variable scriptdata.
diff --git a/modules/controller_midi.c b/modules/controller_midi.c
index ffb26fd029..96d302ee64 100644
--- a/modules/controller_midi.c
+++ b/modules/controller_midi.c
@@ -440,10 +440,10 @@ midi_set_device (ControllerMidi *midi,
 #ifdef HAVE_ALSA
       if (! g_ascii_strcasecmp (midi->device, "alsa"))
         {
-          GAlsaSource *event_source;
-          gchar       *alsa;
-          gchar       *state;
-          gint         ret;
+          GSource *event_source;
+          gchar   *alsa;
+          gchar   *state;
+          gint     ret;
 
           ret = snd_seq_open (&midi->sequencer, "default",
                               SND_SEQ_OPEN_INPUT, 0);
@@ -483,10 +483,12 @@ midi_set_device (ControllerMidi *midi,
           g_object_set (midi, "state", state, NULL);
           g_free (state);
 
-          event_source = (GAlsaSource *) g_source_new (&alsa_source_funcs,
-                                                       sizeof (GAlsaSource));
-          event_source->controller = midi;
-          midi->seq_id = g_source_attach ((GSource *) event_source, NULL);
+          event_source = g_source_new (&alsa_source_funcs,
+                                       sizeof (GAlsaSource));
+
+          ((GAlsaSource *) event_source)->controller = midi;
+
+          midi->seq_id = g_source_attach (event_source, NULL);
           g_source_unref (event_source);
 
           return TRUE;