diff --git a/setup.py b/setup.py
index 642b39e..29c2b98 100755
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@ class InstallCommand(install):
 
 
 setup(name='talon',
-      version='1.4.2',
+      version='1.4.3',
       description=("Mailgun library "
                    "to extract message quotations and signatures."),
       long_description=open("README.rst").read(),
diff --git a/talon/signature/extraction.py b/talon/signature/extraction.py
index fb88b32..14e750a 100644
--- a/talon/signature/extraction.py
+++ b/talon/signature/extraction.py
@@ -32,7 +32,7 @@ RE_REVERSE_SIGNATURE = re.compile(r'''
 
 def is_signature_line(line, sender, classifier):
     '''Checks if the line belongs to signature. Returns True or False.'''
-    data = numpy.array(build_pattern(line, features(sender)))
+    data = numpy.array(build_pattern(line, features(sender))).reshape(1, -1)
     return classifier.predict(data) > 0