diff --git a/arduino-core/src/processing/app/helpers/FileUtils.java b/arduino-core/src/processing/app/helpers/FileUtils.java
index 92b069195..eaaeb6102 100644
--- a/arduino-core/src/processing/app/helpers/FileUtils.java
+++ b/arduino-core/src/processing/app/helpers/FileUtils.java
@@ -77,7 +77,11 @@ public class FileUtils {
       return;
     }
     if (file.isDirectory()) {
-      for (File current : file.listFiles()) {
+      File[] files = file.listFiles();
+      if (files == null) {
+        return;
+      }
+      for (File current : files) {
         recursiveDelete(current);
       }
     }