diff --git a/src/main/java/info/istlab/IoTP/MyFile.java b/src/main/java/info/istlab/IoTP/MyFile.java
index 14483fc..7851c77 100644
--- a/src/main/java/info/istlab/IoTP/MyFile.java
+++ b/src/main/java/info/istlab/IoTP/MyFile.java
@@ -8,7 +8,7 @@
     }
 
     public String toString() {
-        return super.toString().replaceAll(App.workingDir+"/", "");
+        return super.toString().replaceAll(App.workingDir+File.pathSeparator, "");
     }
 }