diff --git a/media/mtp/MtpProperty.h b/media/mtp/MtpProperty.h
index 98b465a..c12399c 100644
--- a/media/mtp/MtpProperty.h
+++ b/media/mtp/MtpProperty.h
@@ -88,6 +88,9 @@
     void                setDefaultValue(const uint16_t* string);
     void                setCurrentValue(const uint16_t* string);
 
+    void                setFormRange(int min, int max, int step);
+    void                setFormEnum(const int* values, int count);
+
     void                print();
 
     inline bool         isDeviceProperty() const {