diff --git a/tools/debugger/SkDrawCommand.h b/tools/debugger/SkDrawCommand.h
index 1b3d9ab..654cbdd 100644
--- a/tools/debugger/SkDrawCommand.h
+++ b/tools/debugger/SkDrawCommand.h
@@ -10,6 +10,7 @@
 
 #include "SkBitmap.h"
 #include "SkCanvas.h"
+#include "SkFlattenable.h"
 #include "SkTLazy.h"
 #include "SkPath.h"
 #include "SkRegion.h"