diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a2c7174..f62736b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -30,9 +30,4 @@ grade:
     - cp submission.jar /shared/submission/submission.jar
   script:
     - cd /grader
-    - /grader/grade > result.json
-    - cat result.json | /grader/feedback-printer
-  artifacts:
-    expire_in: 7 days
-    paths:
-      - /grader/result.json
+    - /grader/grade | /grader/feedback-printer
diff --git a/project/StudentTasks.scala b/project/StudentTasks.scala
index bec5cec..587ba85 100644
--- a/project/StudentTasks.scala
+++ b/project/StudentTasks.scala
@@ -53,7 +53,7 @@ object StudentTasks extends AutoPlugin {
       throw new MessageOnlyException(s"Could not find tests JarFile: $testSuiteJar")
     }
 
-    val classPath = s"${(Test / dependencyClasspath).value.map(_.data).mkString(":")}:$testSuiteJar"
+    val classPath = s"${(Test / dependencyClasspath).value.map(_.data).mkString(File.pathSeparator)}${File.pathSeparator}$testSuiteJar"
     val junitProcess =
       Fork.java.fork(
         ForkOptions(),