diff --git a/Jenkinsfile b/Jenkinsfile
index d618485..42dc97f 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -15,7 +15,7 @@
                         echo "Building for Linux"
                         sh "python ./build.py"
                         echo "Testing for Linux"
-                        sh ". ./env.sh; dobuild; domut_ci; dotest_ci"
+                        sh ". ./env.sh; dobuild && domut_ci && dotest_ci"
                         sh "mv NewLang.pyz NewLang.linux.pyz"
                         archiveArtifacts artifacts: 'NewLang.linux.pyz', fingerprint: true
                         cleanWs cleanWhenAborted: false, cleanWhenFailure: false, cleanWhenNotBuilt: false, cleanWhenUnstable: false
diff --git a/env.sh b/env.sh
index 6ff1600..e6b412e 100644
--- a/env.sh
+++ b/env.sh
@@ -34,5 +34,5 @@
 docheck() { dotidy && dolint && dotest; }
 _envsh_domut() { mutmut run --paths-to-mutate "src/token.py,src/tokenize.py,src/parse.py" $@; }
 domut() { _envsh_domut; }
-domut_ci() { _envsh_domut --no-progress; }
+domut_ci() { _envsh_domut --no-progress || (mutmut results; exit 1); }
 dobuild() { python build.py; }