diff --git a/include/aidge/operator/Memorize.hpp b/include/aidge/operator/Memorize.hpp
index 5f32102d24407d2d873bada9015c0b5fef66ee68..7de34563adcaabd63ab036232d4d7b6539fd11eb 100644
--- a/include/aidge/operator/Memorize.hpp
+++ b/include/aidge/operator/Memorize.hpp
@@ -13,6 +13,7 @@
 #define AIDGE_CORE_OPERATOR_MEMORIZE_H_
 
 #include <memory>
+#include <string>
 #include <vector>
 
 #include "aidge/backend/OperatorImpl.hpp"