diff --git a/db/builder_db.ml b/db/builder_db.ml
index 18f6d29..3c4bdce 100644
--- a/db/builder_db.ml
+++ b/db/builder_db.ml
@@ -333,6 +333,7 @@ module Build = struct
        FROM build b
        WHERE b.job = $1 AND b.result_code = 0
          AND ($2 IS NULL OR b.platform = $2)
+         AND b.main_binary IS NOT NULL
        ORDER BY b.start_d DESC, b.start_ps DESC
        LIMIT 1
     |}