diff --git a/setup.py b/setup.py
index 83f0714..8f054df 100755
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@ class InstallCommand(install):
 
 
 setup(name='talon',
-      version='1.2.12',
+      version='1.2.14',
       description=("Mailgun library "
                    "to extract message quotations and signatures."),
       long_description=open("README.rst").read(),
diff --git a/talon/quotations.py b/talon/quotations.py
index f6122ff..9999e6a 100644
--- a/talon/quotations.py
+++ b/talon/quotations.py
@@ -164,6 +164,8 @@ RE_PARENTHESIS_LINK = re.compile("\(https?://")
 
 SPLITTER_MAX_LINES = 4
 MAX_LINES_COUNT = 1000
+# an extensive research shows that exceeding this limit
+# leads to excessive processing time
 MAX_HTML_LEN = 2794202
 
 QUOT_PATTERN = re.compile('^>+ ?')