From e042279471c06a2b7eeeed0520416120b9943ca8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89milie=20Feral?= <emilie.feral@numworks.com>
Date: Thu, 15 Nov 2018 17:38:41 +0100
Subject: [PATCH] [poincare] Function: fix replaceReplaceableSymbols

---
 poincare/src/function.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/poincare/src/function.cpp b/poincare/src/function.cpp
index c2b4e3311..e916c8523 100644
--- a/poincare/src/function.cpp
+++ b/poincare/src/function.cpp
@@ -143,6 +143,7 @@ Expression Function::replaceReplaceableSymbols(Context & context) {
   if (e.isUninitialized()) {
     return *this;
   }
+  e.replaceSymbolWithExpression(Symbol(Symbol::SpecialSymbols::UnknownX), childAtIndex(0));
   replaceWithInPlace(e);
   return e;
 }