diff --git a/src/main/java/org/jenkinsci/plugins/durabletask/BourneShellScript.java b/src/main/java/org/jenkinsci/plugins/durabletask/BourneShellScript.java
index 47915215..0eb49693 100644
--- a/src/main/java/org/jenkinsci/plugins/durabletask/BourneShellScript.java
+++ b/src/main/java/org/jenkinsci/plugins/durabletask/BourneShellScript.java
@@ -119,7 +119,7 @@ public String getScript() {
             String shell = jenkins.getDescriptorByType(Shell.DescriptorImpl.class).getShellOrDefault(ws.getChannel());
             interpreter = "'" + shell + "' -xe ";
         } else {
-            shf.chmod(0755);
+            interpreter = script.split("[\\r\\n]")[0].replaceAll("#!", "");
         }
 
         String scriptPath = shf.getRemote();