diff --git a/poincare/include/poincare/empty_expression.h b/poincare/include/poincare/empty_expression.h
index e56ecc47a..09d1cbb9d 100644
--- a/poincare/include/poincare/empty_expression.h
+++ b/poincare/include/poincare/empty_expression.h
@@ -14,9 +14,10 @@ public:
     return Type::EmptyExpression;
   }
   Expression * clone() const override;
-  int writeTextInBuffer(char * buffer, int bufferSize) const override;private:
+  int writeTextInBuffer(char * buffer, int bufferSize, int numberOfSignificantDigits = PrintFloat::k_numberOfStoredSignificantDigits) const override;
+private:
   /* Layout */
-  ExpressionLayout * privateCreateLayout(FloatDisplayMode floatDisplayMode, ComplexFormat complexFormat) const override;
+  ExpressionLayout * privateCreateLayout(PrintFloat::Mode floatDisplayMode, ComplexFormat complexFormat) const override;
   /* Evaluation */
   Expression * privateApproximate(SinglePrecision p, Context& context, AngleUnit angleUnit) const override { return templatedApproximate<float>(context, angleUnit); }
   Expression * privateApproximate(DoublePrecision p, Context& context, AngleUnit angleUnit) const override { return templatedApproximate<double>(context, angleUnit); }
diff --git a/poincare/src/empty_expression.cpp b/poincare/src/empty_expression.cpp
index b9d7ae2fd..455e26b59 100644
--- a/poincare/src/empty_expression.cpp
+++ b/poincare/src/empty_expression.cpp
@@ -13,11 +13,11 @@ Expression * EmptyExpression::clone() const {
   return new EmptyExpression();
 }
 
-int EmptyExpression::writeTextInBuffer(char * buffer, int bufferSize) const {
+int EmptyExpression::writeTextInBuffer(char * buffer, int bufferSize, int numberOfSignificantDigits) const {
   return LayoutEngine::writeOneCharInBuffer(buffer, bufferSize, Ion::Charset::Empty);
 }
 
-ExpressionLayout * EmptyExpression::privateCreateLayout(FloatDisplayMode floatDisplayMode, ComplexFormat complexFormat) const {
+ExpressionLayout * EmptyExpression::privateCreateLayout(PrintFloat::Mode floatDisplayMode, ComplexFormat complexFormat) const {
   return new EmptyVisibleLayout();
 }