diff --git a/Jenkinsfile b/Jenkinsfile
index e0fc93d..7e72ef3 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -32,14 +32,14 @@ pipeline {
             }
             steps {
                 script {
-                    ´´´
+                    '''
                     apt-get update && apt-get install -y git ca-certificates gcc make libffi-dev
                     git clone https://github.com/ashinn/chibi-scheme.git --depth=1
                     make -j8 -C chibi-scheme
                     make -j8 -C chibi-scheme install
                     snow-chibi install retropikzel.compile-r7rs
                     make SCHEME=chibi LIBRARY=tap all install test
-                    ```.split("\n").each { cmd ->
+                    '''.split("\n").each { cmd ->
                         stage("${cmd}") {
                             catchError(buildResult: 'SUCCESS', stageResult: 'FAILURE') {
                                 sh "${cmd}"