diff --git a/StackBuster.py b/StackBuster.py
index dc9fcb5043a08c4f53ce31196fdfe051b1d40b09..c4e0b3c674eecd2688bc561e54b87efb334dc070 100755
--- a/StackBuster.py
+++ b/StackBuster.py
@@ -1,6 +1,6 @@
 def non_terminating_recursion(a_string, instance_number):
-    a_longer_string = "{} {}".format(a_string, a_string)
-    # print( "Activation instance: {:d}".format(instance_number))
+    a_longer_string = f' {a_string} '
+    print(f'Activation instance: {instance_number}')
     return non_terminating_recursion(a_longer_string, instance_number + 1)