diff --git a/src/pugixpath.cpp b/src/pugixpath.cpp
index e5bf051..facd989 100644
--- a/src/pugixpath.cpp
+++ b/src/pugixpath.cpp
@@ -1291,7 +1291,7 @@ namespace pugi
 		xpath_ast_node(const xpath_ast_node&);
 		xpath_ast_node& operator=(const xpath_ast_node&);
 
-		template <class Comp> static bool compare_eq(xpath_ast_node* lhs, xpath_ast_node* rhs, const xpath_context& c, const Comp& comp = Comp())
+		template <class Comp> static bool compare_eq(xpath_ast_node* lhs, xpath_ast_node* rhs, const xpath_context& c, const Comp& comp)
 		{
 			xpath_type_t lt = lhs->rettype(), rt = rhs->rettype();
 
@@ -1360,7 +1360,7 @@ namespace pugi
 			return false;
 		}
 
-		template <class Comp> static bool compare_rel(xpath_ast_node* lhs, xpath_ast_node* rhs, const xpath_context& c, const Comp& comp = Comp())
+		template <class Comp> static bool compare_rel(xpath_ast_node* lhs, xpath_ast_node* rhs, const xpath_context& c, const Comp& comp)
 		{
 			xpath_type_t lt = lhs->rettype(), rt = rhs->rettype();