diff --git a/jc/parsers/last.py b/jc/parsers/last.py
index 6b2c2504..7ffb77fc 100644
--- a/jc/parsers/last.py
+++ b/jc/parsers/last.py
@@ -116,6 +116,9 @@ def process(proc_data):
         if 'tty' in entry and entry['tty'] == '~':
             entry['tty'] = None
 
+        if 'tty' in entry and entry['tty'] == 'system_boot':
+            entry['tty'] = 'system boot'
+
         if 'hostname' in entry and entry['hostname'] == '-':
             entry['hostname'] = None