diff --git a/arduino-core/src/processing/app/Sketch.java b/arduino-core/src/processing/app/Sketch.java
index 41e6484b1..f94bae9ac 100644
--- a/arduino-core/src/processing/app/Sketch.java
+++ b/arduino-core/src/processing/app/Sketch.java
@@ -250,7 +250,7 @@ public class Sketch {
     // If the folder is actually renamed (as opposed to moved somewhere
     // else), check for conflicts using the new filename, but the
     // existing folder name.
-    if(newFolder.getName() != folder.getName())
+    if (!newFolder.getName().equals(folder.getName()))
       checkNewFilename(new File(folder, newPrimary));
 
     return new File(newFolder, newPrimary);