diff --git a/src/cmd/compile/internal/gc/ssa.go b/src/cmd/compile/internal/gc/ssa.go
index 3e898bb3a7..2f116464d4 100644
--- a/src/cmd/compile/internal/gc/ssa.go
+++ b/src/cmd/compile/internal/gc/ssa.go
@@ -478,7 +478,7 @@ func (s *state) assign(op uint8, left *Node, right *Node) {
 		t := left.Type
 		switch {
 		case t.IsString():
-			val = s.entryNewValue0(ssa.OpConst, left.Type)
+			val = s.entryNewValue0A(ssa.OpConst, left.Type, "")
 		case t.IsInteger():
 			val = s.entryNewValue0(ssa.OpConst, left.Type)
 		case t.IsBoolean():