diff --git a/lib/ipdb_debugging.py b/lib/ipdb_debugging.py
index 33782dcb1..fb7fc7967 100644
--- a/lib/ipdb_debugging.py
+++ b/lib/ipdb_debugging.py
@@ -3,5 +3,6 @@
 import ipdb
 
 def plus_two(num):
-    num + 2
-    return num
+    sum=num + 2
+    ipdb.set_trace()
+    return sum