diff --git a/libc/upstream-netbsd/android/include/rand48.h b/libc/upstream-netbsd/android/include/rand48.h
index 1ad8b0d..1279906 100644
--- a/libc/upstream-netbsd/android/include/rand48.h
+++ b/libc/upstream-netbsd/android/include/rand48.h
@@ -18,10 +18,10 @@
 
 #include <stdlib.h>
 
-extern void		__dorand48(unsigned short[3]);
-extern unsigned short	__rand48_seed[3];
-extern unsigned short	__rand48_mult[3];
-extern unsigned short	__rand48_add;
+__LIBC_HIDDEN__ void		__dorand48(unsigned short[3]);
+__LIBC_HIDDEN__ unsigned short	__rand48_seed[3];
+__LIBC_HIDDEN__ unsigned short	__rand48_mult[3];
+__LIBC_HIDDEN__ unsigned short	__rand48_add;
 
 #define	RAND48_SEED_0	(0x330e)
 #define	RAND48_SEED_1	(0xabcd)