diff --git a/expat/fuzz/xml_lpm_fuzzer.cpp b/expat/fuzz/xml_lpm_fuzzer.cpp
index 0e14c889..022108f8 100644
--- a/expat/fuzz/xml_lpm_fuzzer.cpp
+++ b/expat/fuzz/xml_lpm_fuzzer.cpp
@@ -140,7 +140,7 @@ static void TouchString(const XML_Char* ptr, int len=-1) {
   }
 }
 
-static void TouchNodeAndRecurse(XML_Content* content, bool topLevel=true) {
+static void TouchNodeAndRecurse(XML_Content* content) {
   switch (content->type) {
     case XML_CTYPE_EMPTY:
     case XML_CTYPE_ANY:
@@ -181,7 +181,7 @@ static void TouchNodeAndRecurse(XML_Content* content, bool topLevel=true) {
           || (content->quant == XML_CQUANT_PLUS));
       assert(content->name == NULL);
       for (int i = 0; i < content->numchildren; ++i) {
-        TouchNodeAndRecurse(&content->children[i], false);
+        TouchNodeAndRecurse(&content->children[i]);
       }
       break;