diff --git a/poincare/include/poincare/expression_node.h b/poincare/include/poincare/expression_node.h
index 391de016b..4041add6c 100644
--- a/poincare/include/poincare/expression_node.h
+++ b/poincare/include/poincare/expression_node.h
@@ -95,6 +95,7 @@ public:
     Subtraction,
     Sum,
 
+    Unit,
     ComplexCartesian,
 
     ConfidenceInterval,
@@ -104,7 +105,6 @@ public:
     MatrixTranspose,
     PredictionInterval,
     Matrix,
-    Unit,
     EmptyExpression
    };