diff --git a/arduino-core/src/cc/arduino/Compiler.java b/arduino-core/src/cc/arduino/Compiler.java
index 3591bb46b..adef1ccde 100644
--- a/arduino-core/src/cc/arduino/Compiler.java
+++ b/arduino-core/src/cc/arduino/Compiler.java
@@ -152,7 +152,7 @@ public class Compiler implements MessageConsumer {
 
     size(prefs);
 
-    return sketch.getName() + ".ino";
+    return sketch.getPrimaryFile().getName();
   }
 
   private String VIDPID() {