diff --git a/include/asm-mips/inst.h b/include/asm-mips/inst.h
index 6ad5172..df912c2 100644
--- a/include/asm-mips/inst.h
+++ b/include/asm-mips/inst.h
@@ -28,7 +28,7 @@
 	sdl_op, sdr_op, swr_op, cache_op,
 	ll_op, lwc1_op, lwc2_op, pref_op,
 	lld_op, ldc1_op, ldc2_op, ld_op,
-	sc_op, swc1_op, swc2_op, major_3b_op, /* Opcode 0x3b is unused */
+	sc_op, swc1_op, swc2_op, rdhwr_op,
 	scd_op, sdc1_op, sdc2_op, sd_op
 };