diff --git a/src/TNL/DistributedContainers/Subrange.h b/src/TNL/DistributedContainers/Subrange.h
index e581c9a4fc103ff352fe9b73fa9a612279063084..1512bd2eea3610127a8ed4d132662f790e2e566d 100644
--- a/src/TNL/DistributedContainers/Subrange.h
+++ b/src/TNL/DistributedContainers/Subrange.h
@@ -13,6 +13,7 @@
 #pragma once
 
 #include <ostream>
+
 #include <TNL/Assert.h>
 #include <TNL/String.h>
 #include <TNL/param-types.h>
diff --git a/src/TNL/Solvers/Linear/Preconditioners/Preconditioner.h b/src/TNL/Solvers/Linear/Preconditioners/Preconditioner.h
index 58ab8c682bfaff5adc368c075b8e7e7fa576633f..8d294bd8ae73e4a3e2e41cc7e4ede262a80740da 100644
--- a/src/TNL/Solvers/Linear/Preconditioners/Preconditioner.h
+++ b/src/TNL/Solvers/Linear/Preconditioners/Preconditioner.h
@@ -17,8 +17,6 @@
 #include <TNL/Config/ParameterContainer.h>
 #include <TNL/Solvers/Linear/Traits.h>
 
-#include "../Traits.h"
-
 namespace TNL {
 namespace Solvers {
 namespace Linear {