diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index e3c7c00..85d39ff 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -519,7 +519,7 @@
 			break;
 		}
 
-		if (!arg || (arg & (arg - 1))) {
+		if (!arg) {
 			err = -EINVAL;
 			break;
 		}