diff --git a/apps/sequence/sequence.cpp b/apps/sequence/sequence.cpp
index fb59b8ca9..b8c136c13 100644
--- a/apps/sequence/sequence.cpp
+++ b/apps/sequence/sequence.cpp
@@ -8,6 +8,7 @@
 #include <poincare/integer.h>
 #include "../shared/poincare_helpers.h"
 #include <string.h>
+#include <apps/i18n.h>
 #include <cmath>
 
 using namespace Shared;
@@ -15,6 +16,10 @@ using namespace Poincare;
 
 namespace Sequence {
 
+I18n::Message Sequence::parameterMessageName() const {
+  return I18n::Message::N;
+}
+
 void Sequence::tidy() {
   m_definition.tidyName();
   Function::tidy(); // m_definitionName.tidy()
diff --git a/apps/sequence/sequence.h b/apps/sequence/sequence.h
index 408c11d4f..850f501f1 100644
--- a/apps/sequence/sequence.h
+++ b/apps/sequence/sequence.h
@@ -26,6 +26,7 @@ public:
   Sequence(Ion::Storage::Record record = Record()) :
     Function(record),
     m_nameLayout() {}
+  I18n::Message parameterMessageName() const override;
   CodePoint symbol() const override { return 'n'; }
   void tidy() override;
   // MetaData getters
diff --git a/apps/shared/function.cpp b/apps/shared/function.cpp
index 380383948..6d4352343 100644
--- a/apps/shared/function.cpp
+++ b/apps/shared/function.cpp
@@ -3,7 +3,6 @@
 #include "poincare/src/parsing/parser.h"
 #include <ion/unicode/utf8_helper.h>
 #include <ion/unicode/utf8_decoder.h>
-#include <apps/i18n.h>
 #include <string.h>
 #include <cmath>
 #include <assert.h>
@@ -66,10 +65,6 @@ int Function::printValue(double cursorT, double cursorX, double cursorY, char *
   return PoincareHelpers::ConvertFloatToText<double>(cursorY, buffer, bufferSize, precision);
 }
 
-I18n::Message Function::parameterMessageName() const {
-  return I18n::Message::X;
-}
-
 int Function::nameWithArgument(char * buffer, size_t bufferSize) {
   const char * functionName = fullName();
   size_t result = SymbolAbstract::TruncateExtension(buffer, functionName, bufferSize);
diff --git a/apps/shared/function.h b/apps/shared/function.h
index 87580961b..22c4f692c 100644
--- a/apps/shared/function.h
+++ b/apps/shared/function.h
@@ -45,7 +45,7 @@ public:
   // Name
   int nameWithArgument(char * buffer, size_t bufferSize);
   virtual int printValue(double cursorT, double cursorX, double cursorY, char * buffer, int bufferSize, int precision, Poincare::Context * context);
-  virtual I18n::Message parameterMessageName() const;
+  virtual I18n::Message parameterMessageName() const = 0;
 
   // Evaluation
   virtual Poincare::Coordinate2D<float> evaluateXYAtParameter(float t, Poincare::Context * context) const = 0;