diff --git a/std/thing/description.c b/std/thing/description.c
index 47bfb0e..27d6f33 100644
--- a/std/thing/description.c
+++ b/std/thing/description.c
@@ -465,7 +465,7 @@
                           mapping details )
 {
   if (stringp(keys))
-    details[keys]=descr;
+    details[lower_case(keys)]=descr;
   else if (pointerp(keys))
   {
     foreach(string key : keys)