metainfo/infoex.go   | 4 ++++
 metainfo/metainfo.go | 4 ----

diff --git a/metainfo/infoex.go b/metainfo/infoex.go
index 95cf4c9bde76f1233b67b47771594f169396d76f..1e4610f450ba5467689c99e38df2ee3689b9b8e4 100644
--- a/metainfo/infoex.go
+++ b/metainfo/infoex.go
@@ -41,3 +41,7 @@ 		ie.UpdateBytes()
 	}
 	return ie.Bytes, nil
 }
+
+func (info *InfoEx) Piece(i int) Piece {
+	return Piece{info, i}
+}
diff --git a/metainfo/metainfo.go b/metainfo/metainfo.go
index 8d9f6e3093c0dc94db9feaf15354207a7e197016..9e5fddb1ecd9b3e480e4359be1090f67ceb78cd0 100644
--- a/metainfo/metainfo.go
+++ b/metainfo/metainfo.go
@@ -163,10 +163,6 @@ 	}
 	return len(info.Pieces) / 20
 }
 
-func (info *InfoEx) Piece(i int) Piece {
-	return Piece{info, i}
-}
-
 func (info *Info) IsDir() bool {
 	return len(info.Files) != 0
 }