diff --git a/include/internal/catch_tostring.cpp b/include/internal/catch_tostring.cpp
index 4e0c027d..8cbabbf2 100644
--- a/include/internal/catch_tostring.cpp
+++ b/include/internal/catch_tostring.cpp
@@ -205,7 +205,7 @@ std::string StringMaker<bool>::convert(bool b) {
     return b ? "true" : "false";
 }
 
-std::string StringMaker<char>::convert(char value) {
+std::string StringMaker<signed char>::convert(signed char value) {
     if (value == '\r') {
         return "'\\r'";
     } else if (value == '\f') {
@@ -222,8 +222,8 @@ std::string StringMaker<char>::convert(char value) {
         return chstr;
     }
 }
-std::string StringMaker<signed char>::convert(signed char c) {
-    return ::Catch::Detail::stringify(static_cast<char>(c));
+std::string StringMaker<char>::convert(char c) {
+    return ::Catch::Detail::stringify(static_cast<signed char>(c));
 }
 std::string StringMaker<unsigned char>::convert(unsigned char c) {
     return ::Catch::Detail::stringify(static_cast<char>(c));