diff --git a/retroshare-gui/src/gui/msgs/MessageComposer.h b/retroshare-gui/src/gui/msgs/MessageComposer.h
index df8b3c40d..d1b629417 100644
--- a/retroshare-gui/src/gui/msgs/MessageComposer.h
+++ b/retroshare-gui/src/gui/msgs/MessageComposer.h
@@ -36,7 +36,7 @@ class QFontComboBox;
 class QTextEdit;
 class QTextCharFormat;
 class RSTreeWidgetItemCompareRole;
-class RsGxsChannelGroup;
+struct RsGxsChannelGroup;
 class RsGxsForumGroup;
 
 class MessageComposer : public QMainWindow