diff --git a/poincare/Makefile b/poincare/Makefile
index 8a8907671..66f38166f 100644
--- a/poincare/Makefile
+++ b/poincare/Makefile
@@ -91,7 +91,7 @@ src += $(addprefix poincare/src/,\
   matrix_trace.cpp \
   matrix_transpose.cpp \
   multiplication.cpp \
-  n_ary_expression_node.cpp \
+  n_ary_expression.cpp \
   naperian_logarithm.cpp \
   nth_root.cpp \
   number.cpp \
diff --git a/poincare/include/poincare/addition.h b/poincare/include/poincare/addition.h
index 8a8d130ca..45a5d7d32 100644
--- a/poincare/include/poincare/addition.h
+++ b/poincare/include/poincare/addition.h
@@ -2,7 +2,7 @@
 #define POINCARE_ADDITION_H
 
 #include <poincare/approximation_helper.h>
-#include <poincare/n_ary_expression_node.h>
+#include <poincare/n_ary_expression.h>
 #include <poincare/rational.h>
 
 namespace Poincare {
diff --git a/poincare/include/poincare/multiplication.h b/poincare/include/poincare/multiplication.h
index d239f0af0..57bf6ac21 100644
--- a/poincare/include/poincare/multiplication.h
+++ b/poincare/include/poincare/multiplication.h
@@ -2,7 +2,7 @@
 #define POINCARE_MULTIPLICATION_H
 
 #include <poincare/approximation_helper.h>
-#include <poincare/n_ary_expression_node.h>
+#include <poincare/n_ary_expression.h>
 
 namespace Poincare {
 
diff --git a/poincare/include/poincare/n_ary_expression_node.h b/poincare/include/poincare/n_ary_expression.h
similarity index 96%
rename from poincare/include/poincare/n_ary_expression_node.h
rename to poincare/include/poincare/n_ary_expression.h
index b86dbf5eb..814e106dd 100644
--- a/poincare/include/poincare/n_ary_expression_node.h
+++ b/poincare/include/poincare/n_ary_expression.h
@@ -1,5 +1,5 @@
-#ifndef POINCARE_N_ARY_EXPRESSION_NODE_H
-#define POINCARE_N_ARY_EXPRESSION_NODE_H
+#ifndef POINCARE_N_ARY_EXPRESSION_H
+#define POINCARE_N_ARY_EXPRESSION_H
 
 #include <poincare/expression.h>
 
diff --git a/poincare/src/n_ary_expression_node.cpp b/poincare/src/n_ary_expression.cpp
similarity index 98%
rename from poincare/src/n_ary_expression_node.cpp
rename to poincare/src/n_ary_expression.cpp
index 2b6ffd44e..e1d5b4c14 100644
--- a/poincare/src/n_ary_expression_node.cpp
+++ b/poincare/src/n_ary_expression.cpp
@@ -1,4 +1,4 @@
-#include <poincare/n_ary_expression_node.h>
+#include <poincare/n_ary_expression.h>
 extern "C" {
 #include <assert.h>
 #include <stdlib.h>