CI dox
diff --git a/ci/dox.sh b/ci/dox.sh
index a003dc3..6edcb15 100644
--- a/ci/dox.sh
+++ b/ci/dox.sh
@@ -1,14 +1,18 @@
 #!/bin/sh
 
+# Builds documentation for all target triples that we have a registered URL for
+# in liblibc. This scrapes the list of triples to document from `src/lib.rs`
+# which has a bunch of `html_root_url` directives we pick up.
+
 set -e
 
+TARGETS=`grep html_root_url src/lib.rs | sed 's/.*".*\/\(.*\)"/\1/'`
+
 rm -rf target/doc
 mkdir -p target/doc
 
 cp ci/landing-page-head.html target/doc/index.html
 
-TARGETS=`grep html_root_url src/lib.rs | sed 's/.*".*\/\(.*\)"/\1/'`
-
 for target in $TARGETS; do
   echo documenting $target
 
@@ -21,7 +25,8 @@
 
 cat ci/landing-page-footer.html >> target/doc/index.html
 
-if [ "$TRAVIS_PULL_REQUEST" = "false" ] && [ "$TRAVIS_BRANCH" = "autotest" ]; then
+# If we're on travis, not a PR, and on the right branch, publish!
+if [ "$TRAVIS_PULL_REQUEST" = "false" ] && [ "$TRAVIS_BRANCH" = "master" ]; then
   pip install ghp-import --user $USER
   $HOME/.local/bin/ghp-import -n target/doc
   git push -qf https://${GH_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git gh-pages