diff --git a/server/app/endpoints/downloads.py b/server/app/endpoints/downloads.py
index c6ce452..2ccaa75 100644
--- a/server/app/endpoints/downloads.py
+++ b/server/app/endpoints/downloads.py
@@ -89,7 +89,7 @@
 
     # Various standard filters for weeding out bogus requests
     if "empty_ua" in filters:  # Empty User-Agent header, usually automation gone wrong
-        q = q.exclude("terms", **{field_names["useragent"]+".keyword": [""]})
+        q = q.exclude("terms", **{field_names["useragent"]+".keyword": ["", "-"]})
     # TODO: Make this not extremely slow. For now, we'll filter in post.
     #if "no_query" in filters:  # Don't show results with query strings in them
     #    q = q.exclude("wildcard", **{field_names["uri"]+".keyword": "*="})