diff --git a/src/main/java/de/hftstuttgart/dtabackend/utils/ExecuteTestUtil.java b/src/main/java/de/hftstuttgart/dtabackend/utils/ExecuteTestUtil.java
index 9a40aa9a15bc5b27b65e9b8e83eaf7d04668fba9..e8f1dc29b40e79156d0be188464676ac129822f4 100644
--- a/src/main/java/de/hftstuttgart/dtabackend/utils/ExecuteTestUtil.java
+++ b/src/main/java/de/hftstuttgart/dtabackend/utils/ExecuteTestUtil.java
@@ -50,7 +50,7 @@ public class ExecuteTestUtil {
 
     public ResultSummary runTests(String assignmentId, Path workDirectory) throws IOException, InterruptedException {
         // Define paths for the submission-specific directories
-        String submissionDirectory = this.basePathStudentsSubmissionCode + workDirectory.getFileName(); // /dta-test-assignments/dta-submissionID
+        String submissionDirectory = Paths.get(basePathStudentsSubmissionCode, workDirectory.getFileName().toString()).toString();
         Path testPath = Paths.get(submissionDirectory, "test");
         Path srcPath = Paths.get(submissionDirectory, "src");
         Path resultPath = Paths.get(submissionDirectory, "result");