diff --git a/build b/build
index 3f226f7..24fa959 100755
--- a/build
+++ b/build
@@ -195,9 +195,9 @@ task_ci() {
 	# FUTURE: We'll (eventually) want to call the package task here too
 	tasks_run build archive;
 	
-	echo "[DEBUG] '$(git rev-parse --abbrev-ref HEAD)' / 'master'";
+	echo "[DEBUG] '${GIT_REF_NAME}' / 'master'";
 	
-	if [ "$(git rev-parse --abbrev-ref HEAD)" == "master" ]; then
+	if [ "${GIT_REF_NAME}" == "refs/heads/master" ]; then
 		tasks_run deploy;
 	else
 		echo "Not deploying, as this build wasn't on the master branch.";