diff --git a/arduino-ide/filesystem-example/filesystem-example.ino b/arduino-ide/filesystem-example/filesystem-example.ino
index 782dd2c..353a5ad 100644
--- a/arduino-ide/filesystem-example/filesystem-example.ino
+++ b/arduino-ide/filesystem-example/filesystem-example.ino
@@ -30,7 +30,7 @@ void setup() {
     }
 
   }
-  file.close();
+  f.close();
 }
 
 void loop() {