Move back to static StringMaker<T>::convert

This avoids some breakage from the modernization

1 files changed, 2 insertions, 2 deletions

diff --git a/projects/SelfTest/ToStringWhich.cpp b/projects/SelfTest/ToStringWhich.cpp
index 8bd1b6f9..fc658a7a 100644
--- a/projects/SelfTest/ToStringWhich.cpp
+++ b/projects/SelfTest/ToStringWhich.cpp
@@ -22,13 +22,13 @@ std::ostream& operator<<(std::ostream& os, const has_maker_and_operator&) {
 namespace Catch {
     template<>
     struct StringMaker<has_maker> {
-        std::string operator()( const has_maker& ) {
+        static std::string convert( const has_maker& ) {
             return "StringMaker<has_maker>";
         }
     };
     template<>
     struct StringMaker<has_maker_and_operator> {
-        std::string operator()( const has_maker_and_operator& ) {
+        static std::string convert( const has_maker_and_operator& ) {
             return "StringMaker<has_maker_and_operator>";
         }
     };