diff --git a/tests/src/XSTSHarness/XMLHarnessHandlers.cpp b/tests/src/XSTSHarness/XMLHarnessHandlers.cpp
index 0a1a00118d77cb85e6823978791ef7ec6f657e81..f46323e157e2487ed939b2eb96130e0cb3d49742 100644
--- a/tests/src/XSTSHarness/XMLHarnessHandlers.cpp
+++ b/tests/src/XSTSHarness/XMLHarnessHandlers.cpp
@@ -69,7 +69,7 @@ static XMLCh szFive[]={ chDigit_5, chNull };
 // ---------------------------------------------------------------------------
 //  XMLHarnessHandlers: Implementation of the SAX DocumentHandler interface
 // ---------------------------------------------------------------------------
-void XMLHarnessHandlers::startElement(const XMLCh* const uri
+void XMLHarnessHandlers::startElement(const XMLCh* const /* uri */
                                    , const XMLCh* const localname
                                    , const XMLCh* const /* qname */
                                    , const Attributes& attrs)
@@ -185,7 +185,7 @@ void XMLHarnessHandlers::startElement(const XMLCh* const uri
     }
 }
 
-void XMLHarnessHandlers::endElement(const XMLCh* const uri, const XMLCh* const localname, const XMLCh* const qname)
+void XMLHarnessHandlers::endElement(const XMLCh* const /* uri */, const XMLCh* const localname, const XMLCh* const /* qname */)
 {
     if(XMLString::equals(localname, szTestCases))
     {
diff --git a/tests/src/XSTSHarness/XSTSHarness.cpp b/tests/src/XSTSHarness/XSTSHarness.cpp
index 450466bea45f721e2980b7060c9ae8b3455bbf0e..ce3f56434c0337cb0d5505bef00794304ff7649d 100644
--- a/tests/src/XSTSHarness/XSTSHarness.cpp
+++ b/tests/src/XSTSHarness/XSTSHarness.cpp
@@ -224,7 +224,7 @@ public:
     // -----------------------------------------------------------------------
     //  Handlers for the SAX DocumentHandler interface
     // -----------------------------------------------------------------------
-    void startElement(const XMLCh* const uri, const XMLCh* const localname, const XMLCh* const qname, const Attributes& attrs)
+    void startElement(const XMLCh* const /* uri */, const XMLCh* const /* localname */, const XMLCh* const qname, const Attributes& /* attrs */)
     {
         fIsXMLSuite=XMLString::equals(qname, sz_XMLTestSuiteRoot);
         throw fIsXMLSuite;
diff --git a/tests/src/XSTSHarness/XSTSHarness.hpp b/tests/src/XSTSHarness/XSTSHarness.hpp
index f5bb0e21317b5ad856ad82ac46b6ff384e4e9ff6..f6ee05a61c06acfe43afc50464e3c462eb186455 100644
--- a/tests/src/XSTSHarness/XSTSHarness.hpp
+++ b/tests/src/XSTSHarness/XSTSHarness.hpp
@@ -154,7 +154,7 @@ public:
     // -----------------------------------------------------------------------
     //  Handlers for the SAX ErrorHandler interface
     // -----------------------------------------------------------------------
-    void warning(const SAXParseException& exc)      {}
+    void warning(const SAXParseException& /* exc */)      {}
     void error(const SAXParseException& exc);
     void fatalError(const SAXParseException& exc);
     void resetErrors()                              { fSawErrors=false; fErrorText.reset(); }