diff --git a/test/read_events.h b/test/read_events.h
index 12982abc5..b430c8808 100644
--- a/test/read_events.h
+++ b/test/read_events.h
@@ -18,7 +18,7 @@
 #include <iostream>
 #include <vector>
 
-void processEvent(const podio::Frame& event, bool verboser, unsigned eventNum) {
+void processEvent(const podio::Frame& event) {
   auto& mcps = event.get<edm4hep::MCParticleCollection>("MCParticles");
   auto& sths = event.get<edm4hep::SimTrackerHitCollection>("SimTrackerHits");
   auto& schs = event.get<edm4hep::SimCalorimeterHitCollection>("SimCalorimeterHits");
@@ -253,7 +253,7 @@ void read_events(const std::string& filename) {
   for (unsigned i = 0; i < nEvents; ++i) {
     std::cout << "reading event " << i << std::endl;
     const auto event = podio::Frame(reader.readNextEntry("events"));
-    processEvent(event, true, i);
+    processEvent(event);
   }
 }
 
diff --git a/test/test_rdf.cc b/test/test_rdf.cc
index bcf9a4e47..6ce6c41cd 100644
--- a/test/test_rdf.cc
+++ b/test/test_rdf.cc
@@ -8,7 +8,7 @@
 
 #include <iostream>
 
-int main(int argc, char* argv[]) {
+int main(int, char*[]) {
 
   ROOT::EnableImplicitMT();
 
diff --git a/utils/include/edm4hep/utils/vector_utils_legacy.h b/utils/include/edm4hep/utils/vector_utils_legacy.h
index f95bf2a40..8f6225035 100644
--- a/utils/include/edm4hep/utils/vector_utils_legacy.h
+++ b/utils/include/edm4hep/utils/vector_utils_legacy.h
@@ -66,12 +66,12 @@ namespace utils {
   }
   // no z-component for 2D vectors
   template <>
-  inline constexpr auto vector_z<edm4hep::Vector2f>(const edm4hep::Vector2f& v) {
+  inline constexpr auto vector_z<edm4hep::Vector2f>(const edm4hep::Vector2f&) {
     return 0;
   }
 
   template <>
-  inline constexpr auto vector_z<edm4hep::Vector2i>(const edm4hep::Vector2i& v) {
+  inline constexpr auto vector_z<edm4hep::Vector2i>(const edm4hep::Vector2i&) {
     return 0;
   }