diff --git a/Trigger/TrigConfiguration/TrigConfL1Data/Root/PrioritySet.cxx b/Trigger/TrigConfiguration/TrigConfL1Data/Root/PrioritySet.cxx
index abfbdd20015af74e74df7c2b4b8c4bdcd7b1c769..63f402b474efd2dacb63009b61943f002eb02fb4 100644
--- a/Trigger/TrigConfiguration/TrigConfL1Data/Root/PrioritySet.cxx
+++ b/Trigger/TrigConfiguration/TrigConfL1Data/Root/PrioritySet.cxx
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
 */
 
 #include "TrigConfL1Data/PrioritySet.h"
@@ -12,13 +12,6 @@ TrigConf::PrioritySet::PrioritySet()
    : L1DataBaseclass(),m_Priorities(N_PRIORITIES,"LOW")
 {}
   
-void
-TrigConf::PrioritySet::setPriorities(const std::string p[], const unsigned int size) {
-   if (size > N_PRIORITIES) std::cerr 
-      << "setPriorities >> number of priorities too high: " << size << std::endl;
-   for (unsigned int i=0; i<size; i++) m_Priorities.at(i) = p[i];
-}
-
 void
 TrigConf::PrioritySet::setPriorities(const std::vector<std::string>& vec) {
    if (vec.size() > N_PRIORITIES) std::cerr 
diff --git a/Trigger/TrigConfiguration/TrigConfL1Data/TrigConfL1Data/PrioritySet.h b/Trigger/TrigConfiguration/TrigConfL1Data/TrigConfL1Data/PrioritySet.h
index d1efdf7c34e7b9b90409b3ca953783f705a2940c..13d1cbcaf01d4412f8a5b85b7518be6da0f9534f 100644
--- a/Trigger/TrigConfiguration/TrigConfL1Data/TrigConfL1Data/PrioritySet.h
+++ b/Trigger/TrigConfiguration/TrigConfL1Data/TrigConfL1Data/PrioritySet.h
@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
 */
 
 #ifndef TrigConf_PrioritySet
@@ -22,7 +22,6 @@ namespace TrigConf {
 
       // Accessors
       const std::vector<std::string>& priorities() const { return m_Priorities; }
-      void setPriorities( const std::string p[], const unsigned int size);
       void setPriorities(const std::vector<std::string>& vec);
 
       virtual void print(const std::string& indent="", unsigned int detail=1) const override;