diff --git a/src/interest.hpp b/src/interest.hpp
index 686f0a0..b87cd50 100644
--- a/src/interest.hpp
+++ b/src/interest.hpp
@@ -180,7 +180,7 @@
 
   /**
    * @brief Set the selected delegation
-   * @param delegation The index of the selected delegation
+   * @param delegationIndex The index of the selected delegation
    * @throw Error Link is not set.
    * @throw std::out_of_range @p delegationIndex is out of bound in Link.
    */