diff --git a/Jenkinsfile b/Jenkinsfile
index c591697..b5f9c2f 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -9,8 +9,8 @@ pipeline {
         stage('Building HTML documentation...') {
             steps {
                 echo 'building HTML...'
-                sh '/bin/bash -c "source _venv/bin/activate && pip install sphinx lxml"
-                sh '/bin/bash -c "source _venv/bin/activate && cd doc && make html"
+                sh '/bin/bash -c "source _venv/bin/activate && pip install sphinx lxml"'
+                sh '/bin/bash -c "source _venv/bin/activate && cd doc && make html"'
             }
         }
         stage('Syncing website...') {