diff --git a/poincare/include/poincare/parenthesis.h b/poincare/include/poincare/parenthesis.h
index 777daeaca..7668e86a1 100644
--- a/poincare/include/poincare/parenthesis.h
+++ b/poincare/include/poincare/parenthesis.h
@@ -16,7 +16,6 @@ private:
   Evaluation<float> * privateEvaluate(SinglePrecision p, Context& context, AngleUnit angleUnit) const override { return templatedEvaluate<float>(context, angleUnit); }
   Evaluation<double> * privateEvaluate(DoublePrecision p, Context& context, AngleUnit angleUnit) const override { return templatedEvaluate<double>(context, angleUnit); }
  template<typename T> Evaluation<T> * templatedEvaluate(Context& context, AngleUnit angleUnit) const;
-  Expression * m_operand;
 };
 
 }
diff --git a/poincare/src/parenthesis.cpp b/poincare/src/parenthesis.cpp
index ebd687a5f..ac7d8b157 100644
--- a/poincare/src/parenthesis.cpp
+++ b/poincare/src/parenthesis.cpp
@@ -20,7 +20,7 @@ Expression * Parenthesis::clone() const {
 ExpressionLayout * Parenthesis::privateCreateLayout(FloatDisplayMode floatDisplayMode, ComplexFormat complexFormat) const {
   assert(floatDisplayMode != FloatDisplayMode::Default);
   assert(complexFormat != ComplexFormat::Default);
-  return new ParenthesisLayout(m_operand->createLayout(floatDisplayMode, complexFormat));
+  return new ParenthesisLayout(operand(0)->createLayout(floatDisplayMode, complexFormat));
 }
 
 template<typename T>