diff --git a/Cantera/src/ctml.h b/Cantera/src/ctml.h
index ca72c3637..395632018 100755
--- a/Cantera/src/ctml.h
+++ b/Cantera/src/ctml.h
@@ -91,7 +91,7 @@ namespace ctml {
     string getString(const XML_Node& parent, string name);
 
     // these are defined in ct2ctml.cpp
-    void get_CTML_Tree(XML_Node*, string file);
+    void get_CTML_Tree(XML_Node* node, string file);
     void ct2ctml(const char* file);
 }