diff --git a/poincare/src/expression.cpp b/poincare/src/expression.cpp
index 51798cd9e..a4d8b811c 100644
--- a/poincare/src/expression.cpp
+++ b/poincare/src/expression.cpp
@@ -322,7 +322,7 @@ Expression Expression::ParseAndSimplify(const char * text, Context & context, Pr
 
 Expression Expression::simplify(Context & context, Preferences::AngleUnit angleUnit, bool replaceSymbols) {
   sSimplificationHasBeenInterrupted = false;
-  Expression e = deepReduce(context, angleUnit, replaceSymbols);
+  Expression e = reduce(context, angleUnit, replaceSymbols);
   if (sSimplificationHasBeenInterrupted) {
     return Expression();
   }