diff --git a/app/Cache.php b/app/Cache.php
index 2d1824c..c6abac5 100644
--- a/app/Cache.php
+++ b/app/Cache.php
@@ -97,11 +97,13 @@ class Cache {
      * @return bool `true` if the count of files and directories has changed and the cache is updated; `false` otherwise.
      */
     public function changeFile(): bool {
-        if (isset($this->fileCache[$this->currentDir])) {
-            if ($this->counter[$this->currentDir] !== $this->fileCache[$this->currentDir]) {
-                $this->fileCache = array_merge($this->fileCache, $this->counter);
-                return true;
-            }
+        if (!isset($this->fileCache[$this->currentDir])) {
+            $this->fileCache[$this->currentDir] = -1;
+        }
+
+        if ($this->counter[$this->currentDir] !== $this->fileCache[$this->currentDir]) {
+            $this->fileCache = array_merge($this->fileCache, $this->counter);
+            return true;
         }
         return false;
     }