diff --git a/apps/graph/list/storage_list_controller.cpp b/apps/graph/list/storage_list_controller.cpp
index df2e0865c..391dff9b1 100644
--- a/apps/graph/list/storage_list_controller.cpp
+++ b/apps/graph/list/storage_list_controller.cpp
@@ -45,20 +45,7 @@ void StorageListController::willDisplayTitleCellAtIndex(HighlightCell * cell, in
   Shared::BufferFunctionTitleCell * myFunctionCell = (Shared::BufferFunctionTitleCell *)cell;
   StorageFunction * function = m_functionStore->modelAtIndex(j);
   char bufferName[BufferTextView::k_maxNumberOfChar];
-  const char * functionName = function->fullName();
-  int index = 0;
-  const char ofXSring[4] = {'(',  m_functionStore->symbol(),')', 0};
-  size_t ofXSringSize = strlen(ofXSring);
-  while (*functionName != Ion::Storage::k_dotChar
-      && index < BufferTextView::k_maxNumberOfChar - ofXSringSize)
-  {
-    // We keep room to write the final "(x)" //TODO should we?
-    assert(functionName < function->fullName() + strlen(function->fullName()));
-    bufferName[index] = *functionName;
-    functionName++;
-    index++;
-  }
-  strlcpy(&bufferName[index], ofXSring, ofXSringSize+1);
+  function->nameWithArgument(bufferName, BufferTextView::k_maxNumberOfChar, m_functionStore->symbol());
   myFunctionCell->setText(bufferName);
   KDColor functionNameColor = function->isActive() ? function->color() : Palette::GreyDark;
   myFunctionCell->setColor(functionNameColor);
diff --git a/apps/shared/storage_function.cpp b/apps/shared/storage_function.cpp
index 848c45db2..44ef8da59 100644
--- a/apps/shared/storage_function.cpp
+++ b/apps/shared/storage_function.cpp
@@ -29,6 +29,21 @@ void StorageFunction::setColor(KDColor color) {
   recordData()->setColor(color);
 }
 
+int StorageFunction::nameWithArgument(char * buffer, size_t bufferSize, char arg) {
+  const char * functionName = fullName();
+  int index = 0;
+  const char ofXSring[4] = {'(',arg,')', 0};
+  size_t ofXSringLength = strlen(ofXSring);
+  while (*functionName != Ion::Storage::k_dotChar
+      && index < bufferSize - ofXSringLength - 1)
+  {
+    // We keep room to write the final "(x)" //TODO should we?
+    assert(functionName < fullName() + strlen(fullName()));
+    buffer[index++] = *functionName++;
+  }
+  return index - 1 + strlcpy(&buffer[index], ofXSring, bufferSize);
+}
+
 template<typename T>
 T StorageFunction::templatedApproximateAtAbscissa(T x, Poincare::Context * context) const {
   const char unknownX[2] = {Poincare::Symbol::UnknownX, 0};
diff --git a/apps/shared/storage_function.h b/apps/shared/storage_function.h
index d1c6d1910..42b8ff800 100644
--- a/apps/shared/storage_function.h
+++ b/apps/shared/storage_function.h
@@ -21,6 +21,9 @@ public:
   void setActive(bool active);
   void setColor(KDColor color);
 
+  // Name
+  int nameWithArgument(char * buffer, size_t bufferSize, char arg);
+
   // Evaluation
   virtual float evaluateAtAbscissa(float x, Poincare::Context * context) const {
     return templatedApproximateAtAbscissa(x, context);