diff --git a/cmds/flatland/GLHelper.h b/cmds/flatland/GLHelper.h
index 7341374..7a9e9e3 100644
--- a/cmds/flatland/GLHelper.h
+++ b/cmds/flatland/GLHelper.h
@@ -17,6 +17,7 @@
 #include <gui/GraphicBufferAlloc.h>
 #include <gui/GLConsumer.h>
 #include <gui/Surface.h>
+#include <gui/SurfaceControl.h>
 
 #include <EGL/egl.h>
 #include <GLES2/gl2.h>