diff --git a/README.md b/README.md
index 546a162..0639a7a 100644
--- a/README.md
+++ b/README.md
@@ -125,6 +125,8 @@ narbeh@narbeh-laptop:~/ssl-checker$ ./ssl_checker.py -H time.com github.com:443
 +-------------------------------------------------------------------------------------------+
 ```
 
+NOTE: Keep in mind that if the certificate has less than 15 days validity, the script will consider it as a warning in the summary.
+
 
 
 ## Censored?
diff --git a/ssl_checker.py b/ssl_checker.py
index ba5f35b..bfa6903 100755
--- a/ssl_checker.py
+++ b/ssl_checker.py
@@ -178,6 +178,7 @@ class SSLChecker:
         else:
             self.total_valid += 1
 
+        # If the certificate has less than 15 days validity
         if context['valid_days_to_expire'] <= 15:
             self.total_warning += 1