diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5ee6ee16..a5646df3 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -239,7 +239,7 @@ packages:
         - lucid
         - osdkeys
         - pdfinfo
-        #- present GHC 7.10, via https://github.com/nominolo/atto-lisp/issues/18
+        - present
         - pure-io
         # https://github.com/jgoerzen/testpack/issues/11
         #- scrobble GHC 7.10, for QuickCheck 2.8 via testpack