diff --git a/java/src/processing/mode/java/debug/LineBreakpoint.java b/java/src/processing/mode/java/debug/LineBreakpoint.java
index e7327446f5..a2ae4d2350 100644
--- a/java/src/processing/mode/java/debug/LineBreakpoint.java
+++ b/java/src/processing/mode/java/debug/LineBreakpoint.java
@@ -207,8 +207,8 @@ public String toString() {
    */
   protected String className() {
     if (line.fileName().endsWith(".pde")) {
-      // standard tab
-      return dbg.getEditor().getSketch().getName();
+      // pure pde tab
+        return line.fileName().substring(0, line.fileName().lastIndexOf(".pde"));
     }
 
     if (line.fileName().endsWith(".java")) {