diff --git a/pipelines/Docs/Eisen/doxygen.groovy b/pipelines/Docs/Eisen/doxygen.groovy
index 32981ac..91a3f2e 100644
--- a/pipelines/Docs/Eisen/doxygen.groovy
+++ b/pipelines/Docs/Eisen/doxygen.groovy
@@ -6,10 +6,10 @@ properties([
     buildDiscarder(logRotator(numToKeepStr: '100')),
     disableConcurrentBuilds(),
     parameters([
-        string (name: "BRANCH", defaultValue: "master",
-                description: "OS repo branch name."),
-        booleanParam (name: "onlyUpdatePipeline", defaultValue: false,
-                      description: "Only update pipeline and exit.")
+        string(name: 'BRANCH', defaultValue: 'master',
+                description: 'OS repo branch name.'),
+        booleanParam(name: 'onlyUpdatePipeline', defaultValue: false,
+                      description: 'Only update pipeline and exit.')
     ]),
     pipelineTriggers(
         [GenericTrigger(
@@ -24,11 +24,10 @@ properties([
 String projectName = 'OS'
 String owner       = 'Eisen'
 String gitRepoName = "${owner}/${projectName}"
-String nexusRepoName = "eisen-os_doc-feature"
+String nexusRepoName = 'eisen-os_doc-feature'
 Git    git         = new Git(this, env.JENKINS_GIT_CREDENTIALS_SSH)
-String doxygenImage = "${env.JENKINS_DOCKER_REGISTRY}/devops/doxygen:1.9.8"
 
-podTemplate(workspaceVolume: hostPathWorkspaceVolume(hostPath: "/data"),
+podTemplate(workspaceVolume: hostPathWorkspaceVolume(hostPath: '/data'),
     yaml: '''
               apiVersion: v1
               kind: Pod
@@ -57,7 +56,7 @@ podTemplate(workspaceVolume: hostPathWorkspaceVolume(hostPath: "/data"),
     node(POD_LABEL) {
         try {
             stage('Update pipeline') {
-                echo("Pipeline updated")
+                echo('Pipeline updated')
             }
 
             String branchName = ''
@@ -68,10 +67,10 @@ podTemplate(workspaceVolume: hostPathWorkspaceVolume(hostPath: "/data"),
                     String shorthashCommit = hashCommit.substring(0, 10)
                     branchName = shorthashCommit
                 } else {
-                    branchName = params.branch
+                    branchName = params.BRANCH
                 }
             } else {
-                branchName = params.branch
+                branchName = params.BRANCH
             }
             println 'branchName: ' + branchName