diff --git a/NEWS.rst b/NEWS.rst
index 66056c4..c0054c8 100644
--- a/NEWS.rst
+++ b/NEWS.rst
@@ -23,6 +23,9 @@ Added
 Changed
 -------
 
+- CLI argument to hide close button `#174
+  <https://github.com/orontee/argos/issues/174>`_
+
 - The exposed action ``update-library`` now takes a parameter to
   specify the URI of the directory to update `#149
   <https://github.com/orontee/argos/issues/149>`_
diff --git a/README.rst b/README.rst
index aa25e0e..1d79108 100644
--- a/README.rst
+++ b/README.rst
@@ -170,7 +170,7 @@ user that will run Argos. Changes can be made using `Dconf Editor
 Some CLI options are provided (complete list can be obtained with
 ``argos --help``)::
 
-  $ argos --no-tooltips --hide-search-button
+  $ argos --no-tooltips --hide-search-button --hide-close-button
 
 Style
 -----
diff --git a/argos/app.py b/argos/app.py
index ed39426..6ea4418 100644
--- a/argos/app.py
+++ b/argos/app.py
@@ -52,6 +52,7 @@ class Application(Gtk.Application):
     start_fullscreen = GObject.Property(type=bool, default=False)
     disable_tooltips = GObject.Property(type=bool, default=False)
     hide_search_button = GObject.Property(type=bool, default=False)
+    hide_close_button = GObject.Property(type=bool, default=False)
     version = GObject.Property(type=str)
 
     def __init__(self, *args, **kwargs):
@@ -144,6 +145,14 @@ def _exception_handler(
             _("Hide search button"),
             None,
         )
+        self.add_main_option(
+            "hide-close-button",
+            0,
+            GLib.OptionFlags.NONE,
+            GLib.OptionArg.NONE,
+            _("Hide close button"),
+            None,
+        )
 
         self.props.start_fullscreen = self._settings.get_boolean("start-fullscreen")
 
@@ -236,6 +245,7 @@ def do_command_line(self, command_line: Gio.ApplicationCommandLine):
 
         self.props.disable_tooltips = "no-tooltips" in options
         self.props.hide_search_button = "hide-search-button" in options
+        self.props.hide_close_button = "hide-close-button" in options
 
         if "maximized" in options:
             LOGGER.warning("The maximized command line option is deprecated!")
diff --git a/argos/widgets/titlebar.py b/argos/widgets/titlebar.py
index d9d3887..ef68e4c 100644
--- a/argos/widgets/titlebar.py
+++ b/argos/widgets/titlebar.py
@@ -65,19 +65,25 @@ def __init__(self, application: Gtk.Application, *, window: Gtk.ApplicationWindo
             self.remove(self.search_button)
             self.search_button = None
 
-        self.set_decoration_layout(":close")
-        self.set_show_close_button(True)
-        # On LXDE with Openbox window manager, showing close
-        # button also decorate title bar with minimize, maximize
-        # buttons whatever the Openbox configuration for the
-        # application is...
-
         self.search_button_toggled_handler_id = (
             self.search_button.connect("toggled", self.on_search_button_toggled)
             if self.search_button
             else None
         )
-        self._window.connect("notify::is-fullscreen", self.on_is_fullscreen_changed)
+
+        if application.props.hide_close_button:
+            self.set_decoration_layout("")
+            self.set_show_close_button(False)
+        else:
+            self.set_decoration_layout(":close")
+            self.set_show_close_button(True)
+
+            # On LXDE with Openbox window manager, showing close
+            # button also decorate title bar with minimize, maximize
+            # buttons whatever the Openbox configuration for the
+            # application is...
+
+            self._window.connect("notify::is-fullscreen", self.on_is_fullscreen_changed)
 
     def toggle_search_entry_focus_maybe(self) -> None:
         if not self.search_button: