diff --git a/algorithms/map/__init__.py b/algorithms/map/__init__.py
index 0eeb6bd1a..7e8698e1f 100644
--- a/algorithms/map/__init__.py
+++ b/algorithms/map/__init__.py
@@ -9,7 +9,7 @@
 
 from .is_anagram import is_anagram
 from .is_isomorphic import is_isomorphic
-from .longest_common_subsequence import max_common_sub_string
+from .longest_common_substring import max_common_sub_string
 from .longest_palindromic_subsequence import longest_palindromic_subsequence
 from .randomized_set import RandomizedSet
 from .valid_sudoku import is_valid_sudoku
diff --git a/algorithms/map/longest_common_subsequence.py b/algorithms/map/longest_common_substring.py
similarity index 100%
rename from algorithms/map/longest_common_subsequence.py
rename to algorithms/map/longest_common_substring.py