diff --git a/apps/calculation/expression_field.cpp b/apps/calculation/expression_field.cpp
index 06ef5d80d..37c2c4151 100644
--- a/apps/calculation/expression_field.cpp
+++ b/apps/calculation/expression_field.cpp
@@ -2,12 +2,6 @@
 
 namespace Calculation {
 
-ExpressionField::ExpressionField(Responder * parentResponder, char * textBuffer, int textBufferLength, Poincare::ExpressionLayout * layout, TextFieldDelegate * textFieldDelegate, ExpressionLayoutFieldDelegate * expressionLayoutFieldDelegate) :
-  ::ExpressionField(parentResponder, textBuffer, textBufferLength, layout, textFieldDelegate, expressionLayoutFieldDelegate)
-{
-  setEditing(true);
-}
-
 bool ExpressionField::handleEvent(Ion::Events::Event event) {
   if (event == Ion::Events::Back) {
     return false;
diff --git a/apps/calculation/expression_field.h b/apps/calculation/expression_field.h
index 34ba89ace..a7fe0e20e 100644
--- a/apps/calculation/expression_field.h
+++ b/apps/calculation/expression_field.h
@@ -7,7 +7,7 @@ namespace Calculation {
 
 class ExpressionField : public ::ExpressionField {
 public:
-  ExpressionField(Responder * parentResponder, char * textBuffer, int textBufferLength, Poincare::ExpressionLayout * layout, TextFieldDelegate * textFieldDelegate, ExpressionLayoutFieldDelegate * expressionLayoutFieldDelegate);
+  using ::ExpressionField::ExpressionField;
 protected:
   bool handleEvent(Ion::Events::Event event) override;
 };