diff --git a/poincare/include/poincare/tree_pool.h b/poincare/include/poincare/tree_pool.h
index 0da0d8f80..d8156e669 100644
--- a/poincare/include/poincare/tree_pool.h
+++ b/poincare/include/poincare/tree_pool.h
@@ -7,7 +7,6 @@
 #include <string.h>
 #include <new>
 #if POINCARE_TREE_LOG
-#include <ostream>
 #include <iostream>
 #endif
 
diff --git a/poincare/src/integer.cpp b/poincare/src/integer.cpp
index b1c197398..6cbe5b91c 100644
--- a/poincare/src/integer.cpp
+++ b/poincare/src/integer.cpp
@@ -18,9 +18,6 @@ extern "C" {
 #include <string.h>
 #include <assert.h>
 }
-#if POINCARE_INTEGER_LOG
-#include<iostream>
-#endif
 #include <algorithm>
 
 namespace Poincare {
diff --git a/poincare/src/tree_handle.cpp b/poincare/src/tree_handle.cpp
index 97e7fbfc1..477565d25 100644
--- a/poincare/src/tree_handle.cpp
+++ b/poincare/src/tree_handle.cpp
@@ -2,9 +2,6 @@
 #include <poincare_nodes.h>
 #include <poincare_layouts.h>
 #include <poincare/ghost.h>
-#if POINCARE_TREE_LOG
-#include <iostream>
-#endif
 
 namespace Poincare {
 
diff --git a/poincare/test/tree/helpers.cpp b/poincare/test/tree/helpers.cpp
index b7709b9d7..22490d99a 100644
--- a/poincare/test/tree/helpers.cpp
+++ b/poincare/test/tree/helpers.cpp
@@ -2,10 +2,6 @@
 #include <poincare/tree_pool.h>
 #include <quiz.h>
 
-#if POINCARE_TREE_LOG
-#include <iostream>
-#endif
-
 int pool_size() {
   return Poincare::TreePool::sharedPool()->numberOfNodes();
 }
diff --git a/poincare/test/tree/helpers.h b/poincare/test/tree/helpers.h
index 75becf6bc..6ac0e1263 100644
--- a/poincare/test/tree/helpers.h
+++ b/poincare/test/tree/helpers.h
@@ -1,7 +1,3 @@
-#if POINCARE_TREE_LOG
-#include <iostream>
-#endif
-
 int pool_size();
 void assert_pool_size(int i);