diff --git a/src/main/java/app/controllers/StatsController.java b/src/main/java/app/controllers/StatsController.java
index 17181fb..fb4b4fc 100644
--- a/src/main/java/app/controllers/StatsController.java
+++ b/src/main/java/app/controllers/StatsController.java
@@ -55,6 +55,8 @@ public class StatsController {
 
     @GetMapping("/graph/peak/of/days")
     public ResponseEntity<List<OnlineUpdater.StatsOfPeakOfDay>> GetPeakOfDays(@RequestParam(required = false, defaultValue = "7") Integer limit) {
+        if (limit > 14) return new ResponseEntity<>(HttpStatus.NOT_ACCEPTABLE);
+
         if (!cache.containsKey(limit)) {
             cache.put(limit, new HashMap<>(){{put(onlineUpdater.getPeakOfDays(limit), Instant.now().getEpochSecond());}});
         }