diff --git a/media/mtp/MtpObjectInfo.h b/media/mtp/MtpObjectInfo.h
index 86780f1..188f21c 100644
--- a/media/mtp/MtpObjectInfo.h
+++ b/media/mtp/MtpObjectInfo.h
@@ -47,7 +47,7 @@
     char*               mKeywords;
 
 public:
-                        MtpObjectInfo(MtpObjectHandle handle);
+    explicit            MtpObjectInfo(MtpObjectHandle handle);
     virtual             ~MtpObjectInfo();
 
     bool                read(MtpDataPacket& packet);