diff --git a/include/binder/CursorWindow.h b/include/binder/CursorWindow.h
index f0b2909dc..4fbff2ac9 100644
--- a/include/binder/CursorWindow.h
+++ b/include/binder/CursorWindow.h
@@ -25,6 +25,7 @@
 #include <utils/RefBase.h>
 
 #define DEFAULT_WINDOW_SIZE 4096
+#define MAX_WINDOW_SIZE (1024 * 1024)
 #define WINDOW_ALLOCATION_SIZE 4096
 
 #define ROW_SLOT_CHUNK_NUM_ROWS 16