diff --git a/media/mtp/MtpProperty.h b/media/mtp/MtpProperty.h
index c12399c..f783a87 100644
--- a/media/mtp/MtpProperty.h
+++ b/media/mtp/MtpProperty.h
@@ -58,6 +58,7 @@
         kFormNone = 0,
         kFormRange = 1,
         kFormEnum = 2,
+        kFormDateTime = 3,
     };
 
     uint32_t            mGroupCode;
@@ -90,6 +91,7 @@
 
     void                setFormRange(int min, int max, int step);
     void                setFormEnum(const int* values, int count);
+    void                setFormDateTime();
 
     void                print();