diff --git a/tox.ini b/tox.ini
index b6f2d96..c8d3909 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,7 +10,19 @@
 [testenv:bashate]
 deps = bashate
 whitelist_externals = bash
-commands = bash -c "find {toxinidir} -not -wholename \*.tox/\* -and \( -name \*.sh -or -name \*rc -or -name functions\* -or \( -wholename lib/\* -and -not -name \*.md \) \) -print0 | xargs -0 bashate -v"
+commands = bash -c "find {toxinidir}          \
+         -not \( -type d -name .?\* -prune \) \ # prune all 'dot' dirs
+         -not \( -type d -name doc -prune \)  \ # skip documentation
+         -type f                              \ # only files
+         -not -name \*~                       \ # skip editors, readme, etc
+         -not -name \*.md                     \
+         \(                                   \
+          -name \*.sh -or                     \
+          -name \*rc -or                      \
+          -name functions\* -or               \
+          -wholename \*/lib/\*                \ # /lib files are shell, but
+         \)                                   \ #   have no extension
+         -print0 | xargs -0 bashate -v"
 
 [testenv:docs]
 deps =