diff --git a/sc2/ChangeLog b/sc2/ChangeLog
index 4ccf264de..9bcaf1aab 100644
--- a/sc2/ChangeLog
+++ b/sc2/ChangeLog
@@ -1,4 +1,5 @@
 Changes towards version 0.3:
+- Absence of voice files is now automatically detected (bug #309) -Mika
 - Fixed Commander Hayes mouth movement before radioactives are given
   (bug #343) -Mika
 - Fix glitches in slylandro probe animation (bugs #398, #399), from Paxtez
diff --git a/sc2/src/sc2code/libs/sound/trackplayer.c b/sc2/src/sc2code/libs/sound/trackplayer.c
index 378cf05e6..be449d6b0 100644
--- a/sc2/src/sc2code/libs/sound/trackplayer.c
+++ b/sc2/src/sc2code/libs/sound/trackplayer.c
@@ -495,6 +495,15 @@ SpliceTrack (UNICODE *TrackName, UNICODE *TrackText, UNICODE *TimeStamp, void (*
 					//	last_chain->decoder->frequency,
 					//	last_chain->decoder->format);
 
+					if (last_chain->decoder->type == SOUNDDECODER_NULL &&
+						speechVolumeScale != 0.0f)
+					{
+						/* No voice ogg available so zeroing speech volume to
+						   ensure proper operation of oscilloscope and music fading */
+						speechVolumeScale = 0.0f;
+						fprintf (stderr, "SpliceTrack(): no voice ogg available so setting speech volume to zero\n");
+					}
+
 					sound_sample->length += last_chain->decoder->length;
 					if (! no_page_break)
 					{