1 files changed, 1 insertions, 1 deletions
diff --git a/src/libexpr/eval.hh b/src/libexpr/eval.hh
index aff68ea2ab8a..2726fd971d45 100644
--- a/src/libexpr/eval.hh
+++ b/src/libexpr/eval.hh
@@ -69,7 +69,7 @@ struct Value
            For canonicity, the store paths should be in sorted order. */
         struct {
             const char * s;
-            const char * * context;
+            const char * * context; // must be in sorted order
         } string;
         
         const char * path;