diff --git a/06/tasks/task_26_is_palindrome_sentence.py b/06/tasks/task_26_is_palindrome_sentence.py
index 359cce2..e12ab46 100644
--- a/06/tasks/task_26_is_palindrome_sentence.py
+++ b/06/tasks/task_26_is_palindrome_sentence.py
@@ -4,4 +4,7 @@ def is_palindrome_sentence(s: str) -> bool:
     """
     Vrátí True, pokud je věta palindrom (ignoruje mezery, interpunkci a velikost písmen).
     """
+# creates a list consisting only of lowercase letters of the original string
+    s_list = [char.lower() for char in s if char.isalpha()]
 
+    return s_list == s_list[::-1]