diff --git a/elastalert/alerts.py b/elastalert/alerts.py
index d3fa7518..f2f31853 100644
--- a/elastalert/alerts.py
+++ b/elastalert/alerts.py
@@ -868,7 +868,9 @@ def create_default_title(self, matches, for_search=False):
         if for_search:
             return title
 
-        title += ' - %s' % (pretty_ts(matches[0][self.rule['timestamp_field']], self.rule.get('use_local_time')))
+        timestamp = matches[0].get(self.rule['timestamp_field'])
+        if timestamp:
+            title += ' - %s' % (pretty_ts(timestamp, self.rule.get('use_local_time')))
 
         # Add count for spikes
         count = matches[0].get('spike_count')
diff --git a/requirements.txt b/requirements.txt
index c66ca8d7..9c32052d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,6 @@ prison>=0.1.2
 py-zabbix==1.1.3
 PyStaticConfiguration>=0.10.3
 python-dateutil>=2.6.0,<2.7.0
-python-magic>=0.4.15
 PyYAML>=5.1
 requests>=2.0.0
 stomp.py>=4.1.17
diff --git a/setup.py b/setup.py
index 30ef9495..2845836a 100644
--- a/setup.py
+++ b/setup.py
@@ -47,7 +47,6 @@
         'stomp.py>=4.1.17',
         'texttable>=0.8.8',
         'twilio>=6.0.0,<6.1',
-        'python-magic>=0.4.15',
         'cffi>=1.11.5'
     ]
 )