diff --git a/Jenkinsfile b/Jenkinsfile
index d4c529d..914103d 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -76,8 +76,8 @@ pipeline {
                         }
                         sh''' 
                         pip3 install --user -r requirements.txt
-                        wget ${link}
-                        python3 unzip.py ${file}
+                        wget $link
+                        python3 unzip.py $file
                         ls -la
                         '''
                     }