diff --git a/src/Model/Study.py b/src/Model/Study.py
index 09a49ee0..369bf019 100644
--- a/src/Model/Study.py
+++ b/src/Model/Study.py
@@ -486,7 +486,7 @@ class Study(SQLModel):
                 data=data
             )
             self._river_scenario_cache[scenario] = river
-            self._river = self._river
+            self._river = river
 
         if reduce(
                 lambda a, s: a or (s.parent is scenario),