diff --git a/include/system/graphics.h b/include/system/graphics.h
index cf2d7de..ac5ae96 100644
--- a/include/system/graphics.h
+++ b/include/system/graphics.h
@@ -17,6 +17,7 @@
 #ifndef SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H
 #define SYSTEM_CORE_INCLUDE_ANDROID_GRAPHICS_H
 
+#include <stddef.h>
 #include <stdint.h>
 
 #ifdef __cplusplus