diff --git a/scripting/engine_spidermonkey.cpp b/scripting/engine_spidermonkey.cpp
index 1f870d2f5dd..73ebfaa55da 100644
--- a/scripting/engine_spidermonkey.cpp
+++ b/scripting/engine_spidermonkey.cpp
@@ -1175,6 +1175,7 @@ namespace mongo {
             }
 
             if ( _context ) {
+                // This is expected to reclaim _global as well.
                 JS_DestroyContext( _context );
                 _context = 0;
             }