diff --git a/bufferinfo/legacy/BufferInfoMinigbm.h b/bufferinfo/legacy/BufferInfoMinigbm.h
index 16cbf2c..40d9926 100644
--- a/bufferinfo/legacy/BufferInfoMinigbm.h
+++ b/bufferinfo/legacy/BufferInfoMinigbm.h
@@ -26,7 +26,7 @@
 class BufferInfoMinigbm : public LegacyBufferInfoGetter {
  public:
   using LegacyBufferInfoGetter::LegacyBufferInfoGetter;
-  int ConvertBoInfo(buffer_handle_t handle, BufferInfo *bo) override;
+  auto GetBoInfo(buffer_handle_t handle) -> std::optional<BufferInfo> override;
   int ValidateGralloc() override;
 };