diff --git a/JenkinsfilePlots b/JenkinsfilePlots
index 03027cb..0a256d2 100644
--- a/JenkinsfilePlots
+++ b/JenkinsfilePlots
@@ -18,6 +18,7 @@ pipeline {
       stage('Plots')
       {
          steps {
+             sh label: '', script: 'chmod a+rwx ./wykres.py'
              sh label: 'WER plot', script: './wykres.py wer.txt wer.png'
              sh label: 'SRR plot', script: './wykres.py srr.txt srr.png'
          }