diff --git a/doc/terminator.1 b/doc/terminator.1
index b2fd01fa..5d27afaa 100644
--- a/doc/terminator.1
+++ b/doc/terminator.1
@@ -25,6 +25,8 @@ Show the version of the Terminator installation
 .TP
 .B \-m, \-\-maximise
 Start with a maximised window
+.B \-M, \-\-maximize
+Start with a maximized window
 .TP
 .B \-f, \-\-fullscreen
 Start with a fullscreen window
diff --git a/terminatorlib/optionparse.py b/terminatorlib/optionparse.py
index 2a4f64f7..7bff44d2 100644
--- a/terminatorlib/optionparse.py
+++ b/terminatorlib/optionparse.py
@@ -49,6 +49,8 @@ def parse_options():
             help=_('Display program version'))
     parser.add_option('-m', '--maximise', action='store_true', dest='maximise',
             help=_('Maximize the window'))
+    parser.add_option('-M', '--maximize', action='store_true', dest='maximise',
+            help=_('Maximize the window'))
     parser.add_option('-f', '--fullscreen', action='store_true',
             dest='fullscreen', help=_('Make the window fill the screen'))
     parser.add_option('-b', '--borderless', action='store_true',