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include/aidge/operator/Operator.hpp

@@ -50,7 +50,7 @@ public:
     virtual std::shared_ptr<Tensor> getOutput(const IOIndex_t outputIdx) const = 0;
     virtual Tensor& output(const IOIndex_t /*outputIdx*/) const = 0;
 
-    std::shared_ptr<Hook>& getHook(std::string hookName) {
+    std::shared_ptr<Hook> getHook(std::string hookName) {
         return mHooks[hookName];
     }
     void addHook(std::string hookName) {