diff --git a/libs/ui/Gralloc1.cpp b/libs/ui/Gralloc1.cpp
index 0083f58..7952ed6 100644
--- a/libs/ui/Gralloc1.cpp
+++ b/libs/ui/Gralloc1.cpp
@@ -17,6 +17,7 @@
 //#define LOG_NDEBUG 0
 
 #include <ui/Gralloc1.h>
+#include <ui/GraphicBuffer.h>
 
 #include <vector>