diff --git a/.travis.yml b/.travis.yml
index 90edc4fc67d..08af91f5ecd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -206,7 +206,7 @@ before_script:
         # We need the official upstream for comparison
         git remote add upstream https://github.com/moodle/moodle.git;
 
-        git fetch upstream master;
+        git fetch upstream MOODLE_38_STABLE;
         export GIT_PREVIOUS_COMMIT="`git merge-base FETCH_HEAD $TRAVIS_COMMIT`";
         export GIT_COMMIT="$TRAVIS_COMMIT";
         export UPSTREAM_FETCH_HEAD=`git rev-parse FETCH_HEAD`