diff --git a/.travis.yml b/.travis.yml
index 2306829..641b7f9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,7 +17,7 @@ python:
   - "3.5"
   - "nightly"
   - "pypy"
-  # not included
+  # not included, for incompatibility
   # - "2.5" # tarvis errs
   # - "3.2" # humanfriendly cant install
   # - "pypy3" # psutil errs