diff --git a/src/cmd/compile/internal/ssa/writebarrier.go b/src/cmd/compile/internal/ssa/writebarrier.go
index 1eb4d7bb1a..054ba1f85c 100644
--- a/src/cmd/compile/internal/ssa/writebarrier.go
+++ b/src/cmd/compile/internal/ssa/writebarrier.go
@@ -35,7 +35,7 @@ func writebarrier(f *Func) {
 	valueLoop:
 		for i, v := range b.Values {
 			switch v.Op {
-			case OpStoreWB, OpMoveWB, OpMoveWBVolatile:
+			case OpStoreWB, OpMoveWB, OpMoveWBVolatile, OpZeroWB:
 				if IsStackAddr(v.Args[0]) {
 					switch v.Op {
 					case OpStoreWB: