diff --git a/libc/include/sys/cdefs.h b/libc/include/sys/cdefs.h
index 849e2b8..9b6da31 100644
--- a/libc/include/sys/cdefs.h
+++ b/libc/include/sys/cdefs.h
@@ -497,5 +497,6 @@
 #endif
 
 #define  __BIONIC__   1
+#include <android/api-level.h>
 
 #endif /* !_SYS_CDEFS_H_ */