diff --git a/src/UsefulException.cpp b/src/UsefulException.cpp
index ad1446d..2f66805 100644
--- a/src/UsefulException.cpp
+++ b/src/UsefulException.cpp
@@ -12,7 +12,7 @@ UsefulException_::UsefulException_(std::string _message, std::string _file, std:
     complete_text = ss.str();
 }
 
-const char* UsefulException_::what() {
+char const* UsefulException_::what() const noexcept {
     return complete_text.c_str();
 }
 
diff --git a/src/UsefulException.hpp b/src/UsefulException.hpp
index c823d35..76be2e2 100644
--- a/src/UsefulException.hpp
+++ b/src/UsefulException.hpp
@@ -17,7 +17,7 @@ class UsefulException_ : public std::exception {
 public:
     UsefulException_(std::string msg, std::string _file, std::string _func, int line_n);
 
-    const char* what();
+    virtual char const* what() const noexcept;
 };
 
 }