diff --git a/arch/mips/include/uapi/asm/inst.h b/arch/mips/include/uapi/asm/inst.h
index df6e775f3fef524e8d049c24433eff06dade0fd7..044123bfab907746ccc11783987255aecc67c20d 100644
--- a/arch/mips/include/uapi/asm/inst.h
+++ b/arch/mips/include/uapi/asm/inst.h
@@ -125,7 +125,8 @@ enum bcop_op {
 enum cop0_coi_func {
 	tlbr_op	      = 0x01, tlbwi_op	    = 0x02,
 	tlbwr_op      = 0x06, tlbp_op	    = 0x08,
-	rfe_op	      = 0x10, eret_op	    = 0x18
+	rfe_op	      = 0x10, eret_op	    = 0x18,
+	wait_op       = 0x20,
 };
 
 /*