diff --git a/src/stream.cpp b/src/stream.cpp
--- a/src/stream.cpp
+++ b/src/stream.cpp
@@ -48,8 +48,8 @@ Stream::Stream(unsigned nc, bool x, unsi
 
 Stream::~Stream()
 {
-    // notify deletion
-    // delete channels
+    // TODO: notify deletion
+    // TODO: delete channels
 }
 
 bool Stream::hasX() const
@@ -83,6 +83,11 @@ const ChannelInfoModel* Stream::infoMode
     return &_infoModel;
 }
 
+ChannelInfoModel* Stream::infoModel()
+{
+    return const_cast<ChannelInfoModel*>(static_cast<const Stream&>(*this).infoModel());
+}
+
 void Stream::setNumChannels(unsigned nc, bool x)
 {
     unsigned oldNum = numChannels();