diff --git a/drivers/char/random.c b/drivers/char/random.c
index 799d09ce4ba8..2314e2749340 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -360,7 +360,7 @@ static int random_write_wakeup_bits = 28 * OUTPUT_POOL_WORDS;
  * polynomial which improves the resulting TGFSR polynomial to be
  * irreducible, which we have made here.
  */
-static struct poolinfo {
+static const struct poolinfo {
 	int poolbitshift, poolwords, poolbytes, poolbits, poolfracbits;
 #define S(x) ilog2(x)+5, (x), (x)*4, (x)*32, (x) << (ENTROPY_SHIFT+5)
 	int tap1, tap2, tap3, tap4, tap5;