diff --git a/src/cmd/compile/internal/gc/subr.go b/src/cmd/compile/internal/gc/subr.go
index 6001b83e29..4cb26edb92 100644
--- a/src/cmd/compile/internal/gc/subr.go
+++ b/src/cmd/compile/internal/gc/subr.go
@@ -1711,6 +1711,7 @@ func genwrapper(rcvr *Type, method *Field, newnam *Sym, iface int) {
 	t.Rlist.Set(out)
 
 	fn := nod(ODCLFUNC, nil, nil)
+	fn.Func.SetDupok(true)
 	fn.Func.Nname = newname(newnam)
 	fn.Func.Nname.Name.Defn = fn
 	fn.Func.Nname.Name.Param.Ntype = t
diff --git a/test/fixedbugs/issue19548.dir/a.go b/test/fixedbugs/issue19548.dir/a.go
new file mode 100644
index 0000000000..3b7cd4b0e2
--- /dev/null
+++ b/test/fixedbugs/issue19548.dir/a.go
@@ -0,0 +1,26 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package a
+
+type Mode uint
+
+func (m Mode) String() string { return "mode string" }
+func (m *Mode) Addr() *Mode   { return m }
+
+type Stringer interface {
+	String() string
+}
+
+var global Stringer
+var m Mode
+
+func init() {
+	// force compilation of the (*Mode).String() wrapper
+	global = &m
+}
+
+func String() string {
+	return global.String() + Mode(0).String()
+}
diff --git a/test/fixedbugs/issue19548.dir/b.go b/test/fixedbugs/issue19548.dir/b.go
new file mode 100644
index 0000000000..e5e807f43d
--- /dev/null
+++ b/test/fixedbugs/issue19548.dir/b.go
@@ -0,0 +1,24 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import "./a"
+
+type Value interface {
+	a.Stringer
+	Addr() *a.Mode
+}
+
+var global a.Mode
+
+func f() int {
+	var v Value
+	v = &global
+	return int(v.String()[0])
+}
+
+func main() {
+	f()
+}
diff --git a/test/fixedbugs/issue19548.go b/test/fixedbugs/issue19548.go
new file mode 100644
index 0000000000..e0e769338a
--- /dev/null
+++ b/test/fixedbugs/issue19548.go
@@ -0,0 +1,9 @@
+// rundir
+
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Test that interface wrappers can be compiled successfully
+// in multiple translation units.
+package ignore