diff --git a/include/aidge/backend/TensorImpl.hpp b/include/aidge/backend/TensorImpl.hpp
index 1a036a0d53bdda4265ca09bae8be19c51e4f0bba..2060c927395b410724cf2528f93b539a48ec69e7 100644
--- a/include/aidge/backend/TensorImpl.hpp
+++ b/include/aidge/backend/TensorImpl.hpp
@@ -103,6 +103,8 @@ public:
 
 private:
     const char *mBackend;
+
+protected:
     int mDevice;
 };