diff --git a/include/ui/Gralloc1On0Adapter.h b/include/ui/Gralloc1On0Adapter.h
index fcd2245..b09fdc6 100644
--- a/include/ui/Gralloc1On0Adapter.h
+++ b/include/ui/Gralloc1On0Adapter.h
@@ -17,9 +17,11 @@
 #ifndef ANDROID_UI_GRALLOC_1_ON_0_ADAPTER_H
 #define ANDROID_UI_GRALLOC_1_ON_0_ADAPTER_H
 
-#include <ui/Fence.h>
-#include <ui/GraphicBuffer.h>
+#include <log/log.h>
 
+#include <ui/Fence.h>
+
+#include <hardware/gralloc.h>
 #include <hardware/gralloc1.h>
 
 #include <mutex>
@@ -27,6 +29,10 @@
 #include <unordered_map>
 #include <vector>
 
+namespace android {
+class GraphicBuffer;
+} // namespace android
+
 struct gralloc_module_t;
 
 // This is not an "official" capability (i.e., it is not found in gralloc1.h),