diff --git a/index.php b/index.php
index 9f26a51..3d77fca 100644
--- a/index.php
+++ b/index.php
@@ -20,6 +20,11 @@ if (!empty($idcko)){
     if(array_key_exists($idcko, $stranky)){
 
         $entry = $stranky[$idcko];
+        
+        if (!array_key_exists($entry["contentid"], $contents)){
+            die("Faulty link");
+        }
+
         $content = $contents[$entry["contentid"]];
         $nickname = $entry["nickname"];
         $logmessage = "Success from $nickname($idcko), IP: $ipcka\n";
@@ -36,11 +41,11 @@ if (!empty($idcko)){
     }
 
     else{
-        die("Bad link");
+        die("Nonexistent link");
     }    
 }
 else{
-    die("Bad link");
+    die("No link");
 }
 
 ?>
\ No newline at end of file