diff --git a/FWCore/Services/plugins/CPU.cc b/FWCore/Services/plugins/CPU.cc
index 03bc4f2f01fa7..cfcd1e1cd8ef3 100644
--- a/FWCore/Services/plugins/CPU.cc
+++ b/FWCore/Services/plugins/CPU.cc
@@ -51,7 +51,7 @@ namespace edm {
     class CPU : public CPUServiceBase {
     public:
       CPU(ParameterSet const &, ActivityRegistry &);
-      ~CPU() = default;
+      ~CPU() override = default;
 
       static void fillDescriptions(ConfigurationDescriptions &descriptions);