diff --git a/Jenkinsfile-eval b/Jenkinsfile-eval
index 13d0c16..321cf65 100644
--- a/Jenkinsfile-eval
+++ b/Jenkinsfile-eval
@@ -67,7 +67,7 @@ node {
                 {
                     sh 'mkdir -p ./.cache'
                     // sh ""
-                    sh 'python ./src/main.py --test --build_id=${currentBuild.number} '
+                    sh 'python ./src/main.py --test --build_id=$currentBuild.number '
                     sh 'python ./src/plot.py '
                     sh "cp ./results/*.csv ${WORKSPACE}" 
                     sh "cp ./results/*.png ${WORKSPACE}"