diff --git a/src/Context.cpp b/src/Context.cpp
index e6a63ec3e..4e1976148 100644
--- a/src/Context.cpp
+++ b/src/Context.cpp
@@ -80,7 +80,7 @@ const std::vector<Extension>& Extension::extensions(Version version) {
     static const std::vector<Extension> extensions{
         _extension(GL,AMD,vertex_shader_layer),             // done
         _extension(GL,AMD,shader_trinary_minmax),           // done
-        _extension(GL,ARB,robustness),
+        _extension(GL,ARB,robustness),                      // done
         _extension(GL,EXT,texture_filter_anisotropic),      // done
         _extension(GL,EXT,direct_state_access),
         _extension(GL,GREMEDY,string_marker)};              // done