diff --git a/renderdoc/serialise/serialiser.cpp b/renderdoc/serialise/serialiser.cpp
index 06224596f..b93f052ef 100644
--- a/renderdoc/serialise/serialiser.cpp
+++ b/renderdoc/serialise/serialiser.cpp
@@ -593,7 +593,9 @@ void Serialiser<SerialiserMode::Writing>::WriteStructuredFile(const SDFile &file
       scratchWriter.m_ChunkFlags = m_ChunkFlags;
     }
 
-    ser->BeginChunk(m_ChunkMetadata.chunkID, m_ChunkMetadata.length);
+    m_ChunkMetadata.chunkID = 0;
+
+    ser->BeginChunk(chunk.metadata.chunkID, m_ChunkMetadata.length);
 
     if(chunk.metadata.flags & SDChunkFlags::OpaqueChunk)
     {