diff --git a/java/src/com/github/bazel_contrib/contrib_rules_jvm/junit5/TestSuiteXmlRenderer.java b/java/src/com/github/bazel_contrib/contrib_rules_jvm/junit5/TestSuiteXmlRenderer.java
index cd1d5276..e6b16ec0 100644
--- a/java/src/com/github/bazel_contrib/contrib_rules_jvm/junit5/TestSuiteXmlRenderer.java
+++ b/java/src/com/github/bazel_contrib/contrib_rules_jvm/junit5/TestSuiteXmlRenderer.java
@@ -10,9 +10,13 @@
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Collection;
+import java.util.HashSet;
 import java.util.Locale;
+import java.util.Set;
 import javax.xml.stream.XMLStreamException;
 import javax.xml.stream.XMLStreamWriter;
+import org.junit.platform.engine.UniqueId;
+import org.junit.platform.launcher.TestIdentifier;
 import org.junit.platform.launcher.TestPlan;
 
 class TestSuiteXmlRenderer {
@@ -73,8 +77,17 @@ public void toXml(XMLStreamWriter xml, TestData suite, Collection<TestData> test
     xml.writeAttribute("package", "");
     xml.writeEmptyElement("properties");
 
+    // JUnitParams generates report names based on parameter values rather than parameter types,
+    // which can result in duplicate test names in the XML output. This situation arises when
+    // two test methods have identical names but differ in parameter types; however, their
+    // string representations may be the same (e.g., Integer 1 and Long 1).
+    Set<String> reportedTests = new HashSet<>();
     for (TestData testCase : tests) {
-      testRenderer.toXml(xml, testCase);
+      // apply duplicate check only for vintage test
+      if (!isVintageTest(testCase.getId())
+          || reportedTests.add(testCase.getId().getLegacyReportingName())) {
+        testRenderer.toXml(xml, testCase);
+      }
     }
 
     writeTextElement(xml, "system-out", suite.getStdOut());
@@ -90,4 +103,12 @@ private String getHostname() {
       return "localhost";
     }
   }
+
+  private boolean isVintageTest(TestIdentifier testIdentifier) {
+    return testIdentifier
+        .getParentIdObject()
+        .flatMap(UniqueId::getEngineId)
+        .filter("junit-vintage"::equals)
+        .isPresent();
+  }
 }