diff --git a/src/main/java/smithereen/storage/GroupStorage.java b/src/main/java/smithereen/storage/GroupStorage.java
index 45cbaaa7..2bbd5157 100644
--- a/src/main/java/smithereen/storage/GroupStorage.java
+++ b/src/main/java/smithereen/storage/GroupStorage.java
@@ -391,8 +391,8 @@ public static Map<Integer, Group> getById(Collection<Integer> _ids) throws SQLEx
 			}
 		}
 		synchronized(GroupStorage.class){
-			for(int id:ids){
-				putIntoCache(result.get(id));
+			for(Group g:result.values()){
+				putIntoCache(g);
 			}
 		}
 		return result;