diff --git a/indra/llcommon/lldictionary.h b/indra/llcommon/lldictionary.h
index 95178b41e77f868252b467f47a218e560ae95449..8c86a8560e0e59f9acd6cd20a9f9cb70561be42f 100644
--- a/indra/llcommon/lldictionary.h
+++ b/indra/llcommon/lldictionary.h
@@ -76,7 +76,7 @@ class LLDictionary : public std::map<Index, Entry *>
 				return dictionary_iter->first;
 			}
 		}
-		llassert(false);
+		llwarns << "Lookup on " << name << " failed" << llendl;
 		return Index(-1);
 	}