diff --git a/include/boost/geometry/extensions/gis/io/shapefile/read.hpp b/include/boost/geometry/extensions/gis/io/shapefile/read.hpp
index 5de6af7f9..de11af392 100644
--- a/include/boost/geometry/extensions/gis/io/shapefile/read.hpp
+++ b/include/boost/geometry/extensions/gis/io/shapefile/read.hpp
@@ -52,7 +52,7 @@ public:
         : m_msg(msg)
     {}
 
-    virtual char const* what() const noexcept
+    char const* what() const noexcept override
     {
         //return "Shapefile read error";
         return m_msg.what();
diff --git a/include/boost/geometry/extensions/gis/io/shapelib/shape_creator.hpp b/include/boost/geometry/extensions/gis/io/shapelib/shape_creator.hpp
index a2af9a0ed..71fdabd2d 100644
--- a/include/boost/geometry/extensions/gis/io/shapelib/shape_creator.hpp
+++ b/include/boost/geometry/extensions/gis/io/shapelib/shape_creator.hpp
@@ -32,7 +32,7 @@ public:
         : m_filename(filename)
     {}
 
-    virtual char const* what() const noexcept
+    char const* what() const noexcept override
     {
         return m_filename.c_str();
     }
diff --git a/include/boost/geometry/extensions/gis/io/wkb/detail/parser.hpp b/include/boost/geometry/extensions/gis/io/wkb/detail/parser.hpp
index 1a4138983..a8e0e70ad 100644
--- a/include/boost/geometry/extensions/gis/io/wkb/detail/parser.hpp
+++ b/include/boost/geometry/extensions/gis/io/wkb/detail/parser.hpp
@@ -49,7 +49,7 @@ public:
 
     inline read_wkb_exception() {}
 
-    virtual char const* what() const noexcept
+    char const* what() const noexcept override
     {
         return "Boost.Geometry Read WKB exception";
     }