diff --git a/include/aidge/operator/Concat.hpp b/include/aidge/operator/Concat.hpp
index 6943b35946032945b229f776223dddaa27fda7a5..5bf113f125b4690fd9f1d60ef4814f21a5d89547 100644
--- a/include/aidge/operator/Concat.hpp
+++ b/include/aidge/operator/Concat.hpp
@@ -179,7 +179,7 @@ public:
 };
 
 inline std::shared_ptr<Node> Concat(const IOIndex_t nbIn, const DimIdx_t axis = 0, const std::string& name = "") {
-    return std::make_shared<Node>(std::make_shared<Concat_Op>(nbIn), axis, name);
+    return std::make_shared<Node>(std::make_shared<Concat_Op>(nbIn, axis), name);
 }
 }