diff --git a/buildSrc/src/main/java/org/elasticsearch/gradle/precommit/JarHellTask.java b/buildSrc/src/main/java/org/elasticsearch/gradle/precommit/JarHellTask.java
index c9152486a1c51..1fb22812683ee 100644
--- a/buildSrc/src/main/java/org/elasticsearch/gradle/precommit/JarHellTask.java
+++ b/buildSrc/src/main/java/org/elasticsearch/gradle/precommit/JarHellTask.java
@@ -42,7 +42,7 @@ public JarHellTask() {
     @TaskAction
     public void runJarHellCheck() {
         LoggedExec.javaexec(getProject(), spec -> {
-            spec.classpath(getClasspath());
+            spec.environment("CLASSPATH", getClasspath().getAsPath());
             spec.setMain("org.elasticsearch.bootstrap.JarHell");
         });
     }