diff --git a/arch/mips/lib/memset.S b/arch/mips/lib/memset.S
index 50f80562812766..6b615bde68b11c 100644
--- a/arch/mips/lib/memset.S
+++ b/arch/mips/lib/memset.S
@@ -204,7 +204,7 @@
 	PTR_L		t0, TI_TASK($28)
 	andi		a2, STORMASK
 	LONG_L		t0, THREAD_BUADDR(t0)
-	LONG_ADDU	a2, t1
+	LONG_ADDU	a2, a0
 	jr		ra
 	LONG_SUBU	a2, t0