diff --git a/src/libs/antares/logs/include/antares/logs/logs.h b/src/libs/antares/logs/include/antares/logs/logs.h
index 9bf0181cf4..3aca2ba167 100644
--- a/src/libs/antares/logs/include/antares/logs/logs.h
+++ b/src/libs/antares/logs/include/antares/logs/logs.h
@@ -63,16 +63,6 @@
 #include <yuni/core/logs/decorators/applicationname.h>
 #include <yuni/core/logs/handler/callback.h>
 
-namespace Antares
-{
-namespace Data
-{
-// Forward declaration
-class Study;
-
-} // namespace Data
-} // namespace Antares
-
 namespace Antares
 {
 //! Handlers for logging