diff --git a/Jenkinsfile b/Jenkinsfile
index 1396217..73f7d83 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -49,17 +49,17 @@ pipeline {
                 anyOf {
                     branch 'stable'
                     branch 'unstable'
-                    tag
+                    buildingTag()
                 }
             }
             steps {
                 sshagent(credentials: ['1cf72f47-b70c-4f90-a958-020956099d19']) {
                     scipt {
-                        SUB_PATH="""${sh(
+                        def SUB_PATH = """${sh(
                                     returnStdout: true,
                                     script: 'echo "${GIT_BRANCH#*/}"'
                                 )}""".trim()
-                        if (tag) {
+                        if (buildingTag()) {
                             SUB_PATH="${env.TAG_NAME}"
                         }
                         withEnv(["SUB_PATH=${SUB_PATH}"]) {