diff --git a/src/main/java/net/frozenorb/apiv3/model/User.java b/src/main/java/net/frozenorb/apiv3/model/User.java
index 27f7dda..9c10528 100644
--- a/src/main/java/net/frozenorb/apiv3/model/User.java
+++ b/src/main/java/net/frozenorb/apiv3/model/User.java
@@ -349,7 +349,7 @@ public final class User {
 			// result.put("user", this);
 			result.put("ranks", Collections2.transform(ranks, Rank::getId));
 
-			Map<String, List<String>> scopeRanks = new HashMap<>();
+			Map<String, Collection<String>> scopeRanks = new HashMap<>();
 
 			for (ServerGroup scope : ServerGroup.findAll()) {
 				List<Rank> ranksOnScope = getRanksScoped(scope, grants);