diff --git a/pkg/service/features/app.feature b/pkg/service/features/app.feature
index c37bb99..47776ac 100644
--- a/pkg/service/features/app.feature
+++ b/pkg/service/features/app.feature
@@ -550,6 +550,14 @@ void loop() {}
 ```
 package test
 
+type device struct {
+}
+func (d *device) doSomething() {
+  a := ""
+  a += fmt.Sprint(5)
+  a += "A " + fmt.Sprint(19) + " A " + fmt.Sprint(a)
+}
+
 func Setup() {
   a := ""
   a += fmt.Sprint(5)
@@ -558,7 +566,17 @@ func Setup() {
 ```
     * Результат:
 ```
+class device {
+public:
+  void doSomething();
+};
 void setup();
+void device::doSomething() {
+std::string a="";
+a+=std::to_string(5);
+a+="A "+std::to_string(19)+" A "+std::to_string(a);
+}
+
 void setup() {
 std::string a="";
 a+=std::to_string(5);
diff --git a/pkg/service/mapping.go b/pkg/service/mapping.go
index ba3479e..e63726d 100644
--- a/pkg/service/mapping.go
+++ b/pkg/service/mapping.go
@@ -2,6 +2,7 @@ package service
 
 var mapping = map[string]string{
 	"fmt.Sprint":                     "std::to_string",
+	"fmt->Sprint":                    "std::to_string",
 	"digital.Low":                    "LOW",
 	"digital.High":                   "HIGH",
 	"digital.ModeInput":              "INPUT",