1 files changed, 1 insertions, 1 deletions
diff --git a/src/3rdparty/clipper/clipper.h b/src/3rdparty/clipper/clipper.h
index 78013afc..d9103ce4 100644
--- a/src/3rdparty/clipper/clipper.h
+++ b/src/3rdparty/clipper/clipper.h
@@ -391,7 +391,7 @@ class clipperException : public std::exception
   public:
     clipperException(const char* description): m_descr(description) {}
     virtual ~clipperException() throw() {}
-    virtual const char* what() const throw() {return m_descr.c_str();}
+    const char* what() const throw() override {return m_descr.c_str();}
   private:
     std::string m_descr;
 };