diff --git a/src/ExprNode.cc b/src/ExprNode.cc
index b4e88c01..556f0efd 100644
--- a/src/ExprNode.cc
+++ b/src/ExprNode.cc
@@ -638,12 +638,6 @@ NumConstNode::containsExogenous() const
   return false;
 }
 
-bool
-NumConstNode::containsParameter() const
-{
-  return false;
-}
-
 expr_t
 NumConstNode::replaceTrendVar() const
 {
@@ -1883,12 +1877,6 @@ VariableNode::containsExogenous() const
   return (get_type() == SymbolType::exogenous || get_type() == SymbolType::exogenousDet);
 }
 
-bool
-VariableNode::containsParameter() const
-{
-  return get_type() == SymbolType::parameter ? true : false;
-}
-
 expr_t
 VariableNode::replaceTrendVar() const
 {
@@ -3768,12 +3756,6 @@ UnaryOpNode::containsExogenous() const
   return arg->containsExogenous();
 }
 
-bool
-UnaryOpNode::containsParameter() const
-{
-  return arg->containsParameter();
-}
-
 expr_t
 UnaryOpNode::replaceTrendVar() const
 {
@@ -5465,12 +5447,6 @@ BinaryOpNode::containsExogenous() const
   return (arg1->containsExogenous() || arg2->containsExogenous());
 }
 
-bool
-BinaryOpNode::containsParameter() const
-{
-  return (arg1->containsParameter() || arg2->containsParameter());
-}
-
 expr_t
 BinaryOpNode::replaceTrendVar() const
 {
@@ -6764,12 +6740,6 @@ TrinaryOpNode::containsExogenous() const
   return (arg1->containsExogenous() || arg2->containsExogenous() || arg3->containsExogenous());
 }
 
-bool
-TrinaryOpNode::containsParameter() const
-{
-  return (arg1->containsParameter() || arg2->containsParameter() || arg3->containsParameter());
-}
-
 expr_t
 TrinaryOpNode::replaceTrendVar() const
 {
@@ -7340,15 +7310,6 @@ AbstractExternalFunctionNode::containsExogenous() const
   return false;
 }
 
-bool
-AbstractExternalFunctionNode::containsParameter() const
-{
-  for (auto argument : arguments)
-    if (argument->containsParameter())
-      return true;
-  return false;
-}
-
 expr_t
 AbstractExternalFunctionNode::replaceTrendVar() const
 {
@@ -8969,13 +8930,6 @@ VarExpectationNode::containsExogenous() const
   exit(EXIT_FAILURE);
 }
 
-bool
-VarExpectationNode::containsParameter() const
-{
-  cerr << "VarExpectationNode::containsParameter not implemented." << endl;
-  exit(EXIT_FAILURE);
-}
-
 bool
 VarExpectationNode::isNumConstNodeEqualTo(double value) const
 {
@@ -9532,12 +9486,6 @@ PacExpectationNode::containsExogenous() const
   return false;
 }
 
-bool
-PacExpectationNode::containsParameter() const
-{
-  return false;
-}
-
 bool
 PacExpectationNode::isNumConstNodeEqualTo(double value) const
 {
diff --git a/src/ExprNode.hh b/src/ExprNode.hh
index ef7bdfd8..df57b822 100644
--- a/src/ExprNode.hh
+++ b/src/ExprNode.hh
@@ -526,9 +526,6 @@ class ExprNode
       //! Returns true if the expression contains one or several exogenous variable
       virtual bool containsExogenous() const = 0;
 
-      //! Returns true if the expression contains one or several parameters
-      virtual bool containsParameter() const = 0;
-
       //! Returns the maximum number of nested diffs in the expression
       virtual int countDiffs() const = 0;
 
@@ -724,7 +721,6 @@ public:
   bool isNumConstNodeEqualTo(double value) const override;
   bool containsEndogenous() const override;
   bool containsExogenous() const override;
-  bool containsParameter() const override;
   int countDiffs() const override;
   bool isVariableNodeEqualTo(SymbolType type_arg, int variable_id, int lag_arg) const override;
   expr_t replaceTrendVar() const override;
@@ -816,7 +812,6 @@ public:
   bool isNumConstNodeEqualTo(double value) const override;
   bool containsEndogenous() const override;
   bool containsExogenous() const override;
-  bool containsParameter() const override;
   int countDiffs() const override;
   bool isVariableNodeEqualTo(SymbolType type_arg, int variable_id, int lag_arg) const override;
   expr_t replaceTrendVar() const override;
@@ -936,7 +931,6 @@ public:
   bool isNumConstNodeEqualTo(double value) const override;
   bool containsEndogenous() const override;
   bool containsExogenous() const override;
-  bool containsParameter() const override;
   int countDiffs() const override;
   bool isVariableNodeEqualTo(SymbolType type_arg, int variable_id, int lag_arg) const override;
   expr_t replaceTrendVar() const override;
@@ -1063,7 +1057,6 @@ public:
   bool isNumConstNodeEqualTo(double value) const override;
   bool containsEndogenous() const override;
   bool containsExogenous() const override;
-  bool containsParameter() const override;
   int countDiffs() const override;
   bool isVariableNodeEqualTo(SymbolType type_arg, int variable_id, int lag_arg) const override;
   expr_t replaceTrendVar() const override;
@@ -1191,7 +1184,6 @@ public:
   bool isNumConstNodeEqualTo(double value) const override;
   bool containsEndogenous() const override;
   bool containsExogenous() const override;
-  bool containsParameter() const override;
   int countDiffs() const override;
   bool isVariableNodeEqualTo(SymbolType type_arg, int variable_id, int lag_arg) const override;
   expr_t replaceTrendVar() const override;
@@ -1319,7 +1311,6 @@ public:
   bool isNumConstNodeEqualTo(double value) const override;
   bool containsEndogenous() const override;
   bool containsExogenous() const override;
-  bool containsParameter() const override;
   int countDiffs() const override;
   bool isVariableNodeEqualTo(SymbolType type_arg, int variable_id, int lag_arg) const override;
   void writePrhs(ostream &output, ExprNodeOutputType output_type, const temporary_terms_t &temporary_terms, const temporary_terms_idxs_t &temporary_terms_idxs, const deriv_node_temp_terms_t &tef_terms, const string &ending) const;
@@ -1535,7 +1526,6 @@ public:
   void collectDynamicVariables(SymbolType type_arg, set<pair<int, int>> &result) const override;
   bool containsEndogenous() const override;
   bool containsExogenous() const override;
-  bool containsParameter() const override;
   int countDiffs() const override;
   bool isNumConstNodeEqualTo(double value) const override;
   expr_t differentiateForwardVars(const vector<string> &subset, subst_table_t &subst_table, vector<BinaryOpNode *> &neweqs) const override;
@@ -1638,7 +1628,6 @@ public:
   void collectDynamicVariables(SymbolType type_arg, set<pair<int, int>> &result) const override;
   bool containsEndogenous() const override;
   bool containsExogenous() const override;
-  bool containsParameter() const override;
   int countDiffs() const override;
   bool isNumConstNodeEqualTo(double value) const override;
   expr_t differentiateForwardVars(const vector<string> &subset, subst_table_t &subst_table, vector<BinaryOpNode *> &neweqs) const override;