diff --git a/x-pack/plugin/ccr/build.gradle b/x-pack/plugin/ccr/build.gradle
index 535423225ab..1c2c4539a7c 100644
--- a/x-pack/plugin/ccr/build.gradle
+++ b/x-pack/plugin/ccr/build.gradle
@@ -26,7 +26,7 @@ task internalClusterTest(type: RandomizedTestingTask,
         dependsOn: test.dependsOn) {
     configure(BuildPlugin.commonTestConfig(project))
     classpath = project.test.classpath
-    testClassesDir = project.test.testClassesDir
+    testClassesDirs = project.test.testClassesDirs
     include '**/*IT.class'
     systemProperty 'es.set.netty.runtime.available.processors', 'false'
 }