diff --git a/poincare/src/symbol.cpp b/poincare/src/symbol.cpp
index 6120ec6a8..ea4be7894 100644
--- a/poincare/src/symbol.cpp
+++ b/poincare/src/symbol.cpp
@@ -27,7 +27,7 @@ float Symbol::privateApproximate(Context& context, AngleUnit angleUnit) const {
 Expression * Symbol::privateEvaluate(Context& context, AngleUnit angleUnit) const {
   assert(angleUnit != AngleUnit::Default);
   if (context.expressionForSymbol(this) != nullptr) {
-    return context.expressionForSymbol(this)->evaluate(context, angleUnit)->clone();
+    return context.expressionForSymbol(this)->evaluate(context, angleUnit);
   }
   return new Complex(Complex::Float(NAN));
 }