diff --git a/solutions/capitalize_string.py b/solutions/capitalize_string.py
index bc21c785e..8d1f8554f 100644
--- a/solutions/capitalize_string.py
+++ b/solutions/capitalize_string.py
@@ -4,8 +4,6 @@
 
 """
 
-import unittest
-
 
 def capitalize_string(s):
     """
@@ -29,7 +27,3 @@ def capitalize_string(s):
     if not isinstance(s, str):
         raise TypeError("Input must be a string.")
     return s.upper()
-
-
-if __name__ == "__main__":
-    unittest.main()