diff --git a/octa/string.hh b/octa/string.hh
index f0ce742..22dc4ca 100644
--- a/octa/string.hh
+++ b/octa/string.hh
@@ -548,6 +548,14 @@ template<typename T> struct ToString<T *> {
     }
 };
 
+template<> struct ToString<const char *> {
+    using Argument = const char *;
+    using Result = String;
+    String operator()(const char *s) {
+        return String(s);
+    }
+};
+
 template<> struct ToString<String> {
     using Argument = String;
     using Result = String;
@@ -578,8 +586,6 @@ template<typename T, typename U> struct ToString<Pair<T, U>> {
 };
 
 template<typename T> struct ToString<const T>: ToString<T> {};
-template<typename T> struct ToString<volatile T>: ToString<T> {};
-template<typename T> struct ToString<const volatile T>: ToString<T> {};
 
 template<typename T, typename = decltype(ToString<T>()(declval<T>()))>
 String to_string(const T &v) {