diff --git a/dynamic_programming/longest_common_subsequence.py b/dynamic_programming/longest_common_subsequence.py
index 12fcae684..4bb1db044 100644
--- a/dynamic_programming/longest_common_subsequence.py
+++ b/dynamic_programming/longest_common_subsequence.py
@@ -76,6 +76,7 @@ if __name__ == "__main__":
     expected_subseq = "GTAB"
 
     ln, subseq = longest_common_subsequence(a, b)
-    assert expected_ln == ln
-    assert expected_subseq == subseq
-    print("len =", ln, ", sub-sequence =", subseq)
+##    print("len =", ln, ", sub-sequence =", subseq)
+    import doctest
+
+    doctest.testmod()