diff --git a/runtime/Cpp/runtime/src/tree/xpath/XPathLexer.cpp b/runtime/Cpp/runtime/src/tree/xpath/XPathLexer.cpp
index 4d7448a89b..f9b89c41b0 100644
--- a/runtime/Cpp/runtime/src/tree/xpath/XPathLexer.cpp
+++ b/runtime/Cpp/runtime/src/tree/xpath/XPathLexer.cpp
@@ -155,7 +155,7 @@ void XPathLexer::action(RuleContext *context, size_t ruleIndex, size_t actionInd
   }
 }
 
-void XPathLexer::IDAction(antlr4::RuleContext *context, size_t actionIndex) {
+void XPathLexer::IDAction(antlr4::RuleContext */*context*/, size_t actionIndex) {
   switch (actionIndex) {
     case 0: 
     				if (isupper(getText()[0]))