diff --git a/engines/zvision/sound/zork_raw.cpp b/engines/zvision/sound/zork_raw.cpp
index 78c851e1321..393f2eb6a9f 100644
--- a/engines/zvision/sound/zork_raw.cpp
+++ b/engines/zvision/sound/zork_raw.cpp
@@ -73,6 +73,9 @@ RawChunkStream::RawChunk RawChunkStream::readNextChunk(Common::SeekableReadStrea
 	tmp.size = 0;
 	tmp.data = NULL;
 
+	if (!stream)
+		return tmp;
+
 	if (stream && (stream->size() == 0 || stream->eos()))
 		return tmp;