1 files changed, 6 insertions, 1 deletions
diff --git a/sigmodr/tree/RootModel.h b/sigmodr/tree/RootModel.h
index 87597042..94e91aea 100644
--- a/sigmodr/tree/RootModel.h
+++ b/sigmodr/tree/RootModel.h
@@ -21,11 +21,16 @@
 // Sigmodr tree includes
 #include "GroupModel.h"
 
+// Forward declarations
+namespace Sigmod
+{
+class Game;
+}
+
 namespace Sigmodr
 {
 namespace Tree
 {
-// Forward declarations
 class GameModel;
 
 class SIGMODRTREE_IMPORT RootModel : public GroupModel