diff --git a/main.py b/main.py
index 4d9fa27..81c3124 100644
--- a/main.py
+++ b/main.py
@@ -91,16 +91,16 @@ def calculate_bmi(weight, height):
 #     """
 #     return (celsius * 9/5) + 32
 
-# def count_vowels(string):
-#     """
-#     Count the number of vowels in a string
-#     """
-#     vowels = 'aeiouAEIOU'
-#     return sum(1 for char in string if char in vowels)
+def count_vowels(string):
+    """
+    Count the number of vowels in a string
+    """
+    vowels = 'aeiouAEIOU'
+    return sum(1 for char in string if char in vowels)
 
-# def is_palindrome(s):
-#     """
-#     Check if a string is a palindrome
-#     """
-#     s = ''.join(char.lower() for char in s if char.isalnum())
-#     return s == s[::-1]
\ No newline at end of file
+def is_palindrome(s):
+    """
+    Check if a string is a palindrome
+    """
+    s = ''.join(char.lower() for char in s if char.isalnum())
+    return s == s[::-1]
\ No newline at end of file