diff --git a/tests/read_frame.h b/tests/read_frame.h
index 07f91e8d0..626708819 100644
--- a/tests/read_frame.h
+++ b/tests/read_frame.h
@@ -71,11 +71,11 @@ void checkVecMemSubsetColl(const podio::Frame& event) {
   ASSERT(subsetColl[0] == origColl[0], "subset coll does not have the right contents");
 }
 
-void checkComponentUserDataColl(const podio::Frame& event) {
+void checkComponentUserDataColl(const podio::Frame& event, int i) {
   const auto& coll = event.get<podio::UserDataCollection<ex2::NamespaceStruct>>("componentUserData");
   ASSERT(coll.isValid(), "componentUserData should be present");
   ASSERT(coll.size() == 2, "componentUserData should have two elements");
-  ASSERT(coll[1].x == 42 && coll[1].y == 123, "componentUserData contents are not as expected");
+  ASSERT(coll[1].x == 42 && coll[1].y == i, "componentUserData contents are not as expected");
 }
 
 template <typename ReaderT>
@@ -134,6 +134,9 @@ int read_frames(const std::string& filename, bool assertBuildVersion = true) {
     if (reader.currentFileVersion() >= podio::version::Version{0, 16, 99}) {
       checkVecMemSubsetColl(otherFrame);
     }
+    if (reader.currentFileVersion() >= podio::version::Version{0, 17, 99}) {
+      checkComponentUserDataColl(otherFrame, i + 100);
+    }
   }
 
   if (reader.readNextEntry(podio::Category::Event)) {
diff --git a/tests/write_frame.h b/tests/write_frame.h
index 4cf8c5a38..4a464c15e 100644
--- a/tests/write_frame.h
+++ b/tests/write_frame.h
@@ -290,7 +290,7 @@ auto createComponentUserDataCollection(int i) {
 
   auto val = ex2::NamespaceStruct{};
   val.x = 42;
-  val.y = 123;
+  val.y = i;
   coll.push_back(val);
 
   return coll;