diff --git a/apps/solver/list_controller.cpp b/apps/solver/list_controller.cpp
index 0e201f9cb..c2ae3ad4a 100644
--- a/apps/solver/list_controller.cpp
+++ b/apps/solver/list_controller.cpp
@@ -154,7 +154,7 @@ bool ListController::textFieldDidFinishEditing(TextField * textField, const char
   return true;
 }
 
-bool ListController::layoutFieldDidFinishEditing(LayoutField * layoutField, Poincare::ExpressionLayout * layout, Ion::Events::Event event) {
+bool ListController::layoutFieldDidFinishEditing(LayoutField * layoutField, Poincare::LayoutReference layout, Ion::Events::Event event) {
   reloadButtonMessage();
   return true;
 }
diff --git a/apps/solver/list_controller.h b/apps/solver/list_controller.h
index 3e4fa4f3e..a38b16462 100644
--- a/apps/solver/list_controller.h
+++ b/apps/solver/list_controller.h
@@ -40,7 +40,7 @@ public:
   bool textFieldDidReceiveEvent(TextField * textField, Ion::Events::Event event) override;
   bool layoutFieldDidReceiveEvent(LayoutField * layoutField, Ion::Events::Event event) override;
   bool textFieldDidFinishEditing(TextField * textField, const char * text, Ion::Events::Event event) override;
-  bool layoutFieldDidFinishEditing(LayoutField * layoutField, Poincare::ExpressionLayout * layout, Ion::Events::Event event) override;
+  bool layoutFieldDidFinishEditing(LayoutField * layoutField, Poincare::LayoutReference layout, Ion::Events::Event event) override;
   /* Specific to Solver */
   void resolveEquations();
 private: