diff --git a/script/jenkins/petals_regression_test/Jenkinsfile b/script/jenkins/petals_regression_test/Jenkinsfile
index 433771e3a..a78d32d36 100644
--- a/script/jenkins/petals_regression_test/Jenkinsfile
+++ b/script/jenkins/petals_regression_test/Jenkinsfile
@@ -4,7 +4,7 @@ pipeline {
   stages {
     stage('integ_test') {
       steps {
-        sh 'bash script/jenkins/petals_regression_test/run_integ_test.sh'
+        sh "bash script/jenkins/petals_regression_test/run_integ_test.sh ${env.GIT_BRANCH}"
       }
     }
   }
diff --git a/script/jenkins/petals_regression_test/run_integ_test.sh b/script/jenkins/petals_regression_test/run_integ_test.sh
index 1c9399879..c532a1709 100644
--- a/script/jenkins/petals_regression_test/run_integ_test.sh
+++ b/script/jenkins/petals_regression_test/run_integ_test.sh
@@ -5,7 +5,8 @@ mamba env update -n climada_env -f ~/jobs/petals_install_env/workspace/requireme
 source activate climada_env
 
 REGTESTENV=~/jobs/petals_compatibility/petals_env
-BRANCH=`git branch -r | grep PR | cut -f 2 -d /`
+BRANCH=$1
+echo ::: $REGTESTENV/$BRANCH
 PETALS_DIR=`test -e $REGTESTENV/$BRANCH && cat $REGTESTENV/$BRANCH || echo ~/jobs/petals_branches/branches/develop/workspace`
 
 python -m venv --system-site-packages tvenv