diff --git a/taglib/riff/aiff/aifffile.h b/taglib/riff/aiff/aifffile.h
index d2408c12..533d83d9 100644
--- a/taglib/riff/aiff/aifffile.h
+++ b/taglib/riff/aiff/aifffile.h
@@ -32,8 +32,6 @@
 
 namespace TagLib {
 
-  namespace ID3v2 { class Tag; }
-
   namespace RIFF {
 
     //! An implementation of AIFF metadata