diff --git a/src/engine/playback.cpp b/src/engine/playback.cpp
index 0021d93b..ce94b883 100644
--- a/src/engine/playback.cpp
+++ b/src/engine/playback.cpp
@@ -1691,6 +1691,10 @@ void DivEngine::runMidiTime(int totalCycles) {
 }
 
 void DivEngine::nextBuf(float** in, float** out, int inChans, int outChans, unsigned int size) {
+  if (!size) {
+    logW("nextBuf called with size 0!");
+    return;
+  }
   lastLoopPos=-1;
 
   if (out!=NULL) {