diff --git a/Jenkinsfile b/Jenkinsfile
index e317738..4e93623 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -75,7 +75,7 @@
 	],
 	inLabels:   [ 'ubuntu-16', 'centos-7' ],
 	onLabels:   [ default: 'master', docker: 'docker', mac: 'mac', android: 'android', ],
-	noPoll:		'(releaseBranch|.+_.+)',
+	noPoll:		"(${releaseBranch}|.+_.+)",	// Don't poll release and private branches
 )
 
 lazyStage {
@@ -155,7 +155,7 @@
 				} else {
 					nextVersion = bumpVersion('build', currentVersion)
 				}
-				// Merge changes from working branch
+				// Merge changes from working branch into release branch
 				gitMerge(workingBranch, releaseBranch)
 				// Bump version and tag before deploying
 				writeFile(encoding: 'UTF-8', file: 'version.txt', text: nextVersion)
@@ -171,6 +171,7 @@
 	]
 }
 
+// Generate packages
 lazyStage {
 	name = 'package'
 	tasks = [