diff --git a/024_string_operations.py b/024_string_operations.py
index aa48620d..a72a6bf1 100644
--- a/024_string_operations.py
+++ b/024_string_operations.py
@@ -80,7 +80,7 @@
 
 def make_uppercase(string):
   # Return the string in uppercase
-  pass
+  
 
 check_that_these_are_equal(
   make_uppercase("hello"), "HELLO")
@@ -97,7 +97,7 @@ def make_uppercase(string):
 
 def make_lowercase(string):
   # Return the string in lowercase
-  pass
+  
 
 check_that_these_are_equal(
   make_lowercase("HELLO"), "hello")
@@ -115,7 +115,7 @@ def make_lowercase(string):
 def strip_whitespace(string):
   # Return the string with any whitespace removed from
   # the start and end
-  pass
+  
 
 check_that_these_are_equal(
   strip_whitespace("hello "), "hello")