diff --git a/poincare/src/parsing/parser.cpp b/poincare/src/parsing/parser.cpp
index f30d1bee5..efb6895fc 100644
--- a/poincare/src/parsing/parser.cpp
+++ b/poincare/src/parsing/parser.cpp
@@ -13,6 +13,13 @@ Expression Parser::parse() {
   return Expression();
 }
 
+bool Parser::IsReservedName(const char * name, size_t nameLength, const Expression::FunctionHelper * const * * functionHelper) {
+  return IsReservedFunctionName(name, nameLength, functionHelper)
+    || IsSpecialIdentifierName(name, nameLength);
+}
+
+// Private
+
 bool Parser::IsReservedFunctionName(const char * name, size_t nameLength, const Expression::FunctionHelper * const * * functionHelper) {
   const Expression::FunctionHelper * const * reservedFunction = &s_reservedFunctions[0];
   assert(reservedFunction < s_reservedFunctionsUpperBound);
diff --git a/poincare/src/parsing/parser.h b/poincare/src/parsing/parser.h
index 529e42ec4..3c0f3cdf9 100644
--- a/poincare/src/parsing/parser.h
+++ b/poincare/src/parsing/parser.h
@@ -30,10 +30,12 @@ public:
   Expression parse();
   Status getStatus() const { return m_status; }
 
+  static bool IsReservedName(const char * name, size_t nameLength, const Expression::FunctionHelper * const * * functionHelper = nullptr);
+
+private:
   static bool IsReservedFunctionName(const char * name, size_t nameLength, const Expression::FunctionHelper * const * * functionHelper = nullptr);
   static bool IsSpecialIdentifierName(const char * name, size_t nameLength);
 
-private:
   Expression parseUntil(Token::Type stoppingType);
 
   // Methods on Tokens