diff --git a/backend/src/test/java/com/group1/programminglanguagesforum/Services/TagServiceTests.java b/backend/src/test/java/com/group1/programminglanguagesforum/Services/TagServiceTests.java
index 4b8fbf9..7a6a6b1 100644
--- a/backend/src/test/java/com/group1/programminglanguagesforum/Services/TagServiceTests.java
+++ b/backend/src/test/java/com/group1/programminglanguagesforum/Services/TagServiceTests.java
@@ -12,6 +12,7 @@
 
 import java.util.Arrays;
 import java.util.Date;
+import java.util.HashSet;
 import java.util.List;
 import java.util.NoSuchElementException;
 import java.util.Optional;
@@ -111,7 +112,7 @@ void testGetTagDetails_Success() {
                 .reputationPoints(0L)
                 .build();
 
-        Tag mockTag = new Tag(1L, null, "Tag1", "Description1", null);
+        Tag mockTag = new Tag(1L, null, "Tag1", "Description1", new HashSet<>());
 
         Question q1 = Question.builder()
                 .id(1L)