diff --git a/PhysicsTools/NanoAOD/plugins/TriggerObjectTableProducer.cc b/PhysicsTools/NanoAOD/plugins/TriggerObjectTableProducer.cc
index e72e2b9cab90a..541de6f222d84 100644
--- a/PhysicsTools/NanoAOD/plugins/TriggerObjectTableProducer.cc
+++ b/PhysicsTools/NanoAOD/plugins/TriggerObjectTableProducer.cc
@@ -95,7 +95,7 @@ class TriggerObjectTableProducer : public edm::stream::EDProducer<> {
           qualityBits("0"),   //will be overwritten from configuration
           qualityBitsDoc("")  //will be created from configuration
     {
-      if (doc.size() > 0) {
+      if (!doc.empty()) {
         doc = "(" + doc + ")";
       }
       std::vector<edm::ParameterSet> qualityBitsConfig =