diff --git a/apps/graph/graph/calculation_graph_controller.cpp b/apps/graph/graph/calculation_graph_controller.cpp
index a912e9f61..2e168bbb5 100644
--- a/apps/graph/graph/calculation_graph_controller.cpp
+++ b/apps/graph/graph/calculation_graph_controller.cpp
@@ -41,7 +41,7 @@ void CalculationGraphController::setRecord(Ion::Storage::Record record) {
 }
 
 void CalculationGraphController::reloadBannerView() {
-  reloadBannerViewForCursorOnFunction(m_cursor, m_record, functionStore(), CartesianFunction::Symbol());
+  reloadBannerViewForCursorOnFunction(m_cursor, m_record, functionStore());
 }
 
 Coordinate2D CalculationGraphController::computeNewPointOfInteresetFromAbscissa(double start, int direction) {
diff --git a/apps/graph/graph/tangent_graph_controller.cpp b/apps/graph/graph/tangent_graph_controller.cpp
index 57b0c6cab..51dcbf403 100644
--- a/apps/graph/graph/tangent_graph_controller.cpp
+++ b/apps/graph/graph/tangent_graph_controller.cpp
@@ -63,7 +63,7 @@ void TangentGraphController::reloadBannerView() {
   if (m_record.isNull()) {
     return;
   }
-  FunctionBannerDelegate::reloadBannerViewForCursorOnFunction(m_cursor, m_record, Shared::FunctionApp::app()->functionStore(), CartesianFunction::Symbol());
+  FunctionBannerDelegate::reloadBannerViewForCursorOnFunction(m_cursor, m_record, Shared::FunctionApp::app()->functionStore());
   GraphControllerHelper::reloadDerivativeInBannerViewForCursorOnFunction(m_cursor, m_record);
   constexpr size_t bufferSize = FunctionBannerDelegate::k_maxNumberOfCharacters + PrintFloat::bufferSizeForFloatsWithPrecision(Preferences::LargeNumberOfSignificantDigits);
   char buffer[bufferSize];
diff --git a/apps/shared/function_banner_delegate.cpp b/apps/shared/function_banner_delegate.cpp
index eeb5f129c..e511a0b1a 100644
--- a/apps/shared/function_banner_delegate.cpp
+++ b/apps/shared/function_banner_delegate.cpp
@@ -6,7 +6,8 @@ using namespace Poincare;
 
 namespace Shared {
 
-void FunctionBannerDelegate::reloadBannerViewForCursorOnFunction(CurveViewCursor * cursor, Ion::Storage::Record record, FunctionStore * functionStore, char symbol) {
+void FunctionBannerDelegate::reloadBannerViewForCursorOnFunction(CurveViewCursor * cursor, Ion::Storage::Record record, FunctionStore * functionStore) {
+  CodePoint symbol = functionStore->symbol();
   ExpiringPointer<Function> function = functionStore->modelForRecord(record);
   constexpr int bufferSize = k_maxNumberOfCharacters+PrintFloat::bufferSizeForFloatsWithPrecision(Preferences::LargeNumberOfSignificantDigits);
   char buffer[bufferSize];
diff --git a/apps/shared/function_banner_delegate.h b/apps/shared/function_banner_delegate.h
index d5fdd85eb..b1d788881 100644
--- a/apps/shared/function_banner_delegate.h
+++ b/apps/shared/function_banner_delegate.h
@@ -11,7 +11,7 @@ class FunctionBannerDelegate  {
 public:
   constexpr static int k_maxNumberOfCharacters = 50;
 protected:
-  void reloadBannerViewForCursorOnFunction(CurveViewCursor * cursor, Ion::Storage::Record record, FunctionStore * functionStore, char symbol);
+  void reloadBannerViewForCursorOnFunction(CurveViewCursor * cursor, Ion::Storage::Record record, FunctionStore * functionStore);
   virtual XYBannerView * bannerView() = 0;
 };
 
diff --git a/apps/shared/function_graph_controller.cpp b/apps/shared/function_graph_controller.cpp
index 14bd3473e..b224e296d 100644
--- a/apps/shared/function_graph_controller.cpp
+++ b/apps/shared/function_graph_controller.cpp
@@ -69,7 +69,7 @@ void FunctionGraphController::reloadBannerView() {
     return;
   }
   Ion::Storage::Record record = functionStore()->activeRecordAtIndex(indexFunctionSelectedByCursor());
-  reloadBannerViewForCursorOnFunction(m_cursor, record, functionStore(), functionStore()->symbol());
+  reloadBannerViewForCursorOnFunction(m_cursor, record, functionStore());
 }
 
 InteractiveCurveViewRangeDelegate::Range FunctionGraphController::computeYRange(InteractiveCurveViewRange * interactiveCurveViewRange) {