diff --git a/renderdoc/driver/metal/metal_common.h b/renderdoc/driver/metal/metal_common.h
index 3493b0e9e..722686a3b 100644
--- a/renderdoc/driver/metal/metal_common.h
+++ b/renderdoc/driver/metal/metal_common.h
@@ -232,6 +232,7 @@ enum class MetalChunk : uint32_t
   MTLBuffer_removeAllDebugMarkers,
   MTLBuffer_remoteStorageBuffer,
   MTLBuffer_newRemoteBufferViewForDevice,
+  MTLBuffer_InternalModifyCPUContents,
   Max
 };