diff --git a/go/types/objectpath/objectpath.go b/go/types/objectpath/objectpath.go
index 882e3b3d8a..cffd7acbee 100644
--- a/go/types/objectpath/objectpath.go
+++ b/go/types/objectpath/objectpath.go
@@ -226,7 +226,8 @@ func For(obj types.Object) (Path, error) {
 	// the best paths because non-types may
 	// refer to types, but not the reverse.
 	empty := make([]byte, 0, 48) // initial space
-	for _, name := range scope.Names() {
+	names := scope.Names()
+	for _, name := range names {
 		o := scope.Lookup(name)
 		tname, ok := o.(*types.TypeName)
 		if !ok {
@@ -253,7 +254,7 @@ func For(obj types.Object) (Path, error) {
 
 	// Then inspect everything else:
 	// non-types, and declared methods of defined types.
-	for _, name := range scope.Names() {
+	for _, name := range names {
 		o := scope.Lookup(name)
 		path := append(empty, name...)
 		if _, ok := o.(*types.TypeName); !ok {