diff --git a/src/common/AudioQueue.cxx b/src/common/AudioQueue.cxx
index bc6964fe3..fb80a26ce 100644
--- a/src/common/AudioQueue.cxx
+++ b/src/common/AudioQueue.cxx
@@ -99,7 +99,10 @@ Int16* AudioQueue::enqueue(Int16* fragment)
   myFragmentQueue.at(fragmentIndex) = fragment;
 
   if (mySize < capacity) mySize++;
-  else myNextFragment = (myNextFragment + 1) % capacity;
+  else {
+    myNextFragment = (myNextFragment + 1) % capacity;
+    (cerr << "audio buffer overflow\n").flush();
+  }
 
   return newFragment;
 }