diff --git a/.travis.yml b/.travis.yml
index b8a8afdcb0..a5834a3845 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,10 +2,7 @@ sudo: false
 language: node_js
 before_install:
 - |
-    if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then
-      TRAVIS_COMMIT_RANGE="FETCH_HEAD...$TRAVIS_BRANCH"
-    fi
-    git diff --name-only $TRAVIS_COMMIT_RANGE | grep -qvE '(\.md$)|(^(ast))/' || {
+    [ "$TRAVIS_COMMIT_RANGE" = "" ] || git diff --name-only $TRAVIS_COMMIT_RANGE | grep -qvE '(\.md$)|(^(doc))/' || {
       echo "Only docs were updated, stopping build process."
       exit
     }