diff --git a/src/activation.hpp b/src/activation.hpp
index 015f524..092fe3d 100644
--- a/src/activation.hpp
+++ b/src/activation.hpp
@@ -231,6 +231,9 @@
     /** @brief Finish PSU update */
     void finishActivation();
 
+    /** @brief Check if the PSU is present */
+    bool isPresent(const std::string& psuInventoryPath);
+
     /** @brief Check if the PSU is compatible with this software*/
     bool isCompatible(const std::string& psuInventoryPath);