diff --git a/strings/capitalize.py b/strings/capitalize.py
index c0b45e0d9614..628ebffc8852 100644
--- a/strings/capitalize.py
+++ b/strings/capitalize.py
@@ -1,6 +1,3 @@
-from string import ascii_lowercase, ascii_uppercase
-
-
 def capitalize(sentence: str) -> str:
     """
     Capitalizes the first letter of a sentence or word.
@@ -19,11 +16,9 @@ def capitalize(sentence: str) -> str:
     if not sentence:
         return ""
 
-    # Create a dictionary that maps lowercase letters to uppercase letters
     # Capitalize the first character if it's a lowercase letter
     # Concatenate the capitalized character with the rest of the string
-    lower_to_upper = dict(zip(ascii_lowercase, ascii_uppercase))
-    return lower_to_upper.get(sentence[0], sentence[0]) + sentence[1:]
+    return sentence[0].upper() + sentence[1:]
 
 
 if __name__ == "__main__":