diff --git a/kivy/core/window/__init__.py b/kivy/core/window/__init__.py
index 75a3d5b9d..f17244f9d 100644
--- a/kivy/core/window/__init__.py
+++ b/kivy/core/window/__init__.py
@@ -1180,15 +1180,6 @@ class WindowBase(EventDispatcher):
         '''
         pass
 
-    @deprecated
-    def toggle_fullscreen(self):
-        '''Toggle between fullscreen and windowed mode.
-
-        .. deprecated:: 1.9.0
-            Use :attr:`fullscreen` instead.
-        '''
-        pass
-
     def maximize(self):
         '''Maximizes the window. This method should be used on desktop
         platforms only.
diff --git a/kivy/core/window/window_pygame.py b/kivy/core/window/window_pygame.py
index 2ee5f8017..e99287941 100644
--- a/kivy/core/window/window_pygame.py
+++ b/kivy/core/window/window_pygame.py
@@ -284,14 +284,6 @@ class WindowPygame(WindowBase):
         pygame.display.flip()
         super(WindowPygame, self).flip()
 
-    @deprecated
-    def toggle_fullscreen(self):
-        if self.flags & pygame.FULLSCREEN:
-            self.flags &= ~pygame.FULLSCREEN
-        else:
-            self.flags |= pygame.FULLSCREEN
-        self._pygame_set_mode()
-
     def mainloop(self):
         for event in pygame.event.get():
 
diff --git a/kivy/core/window/window_sdl2.py b/kivy/core/window/window_sdl2.py
index baf8d0767..028f00c59 100644
--- a/kivy/core/window/window_sdl2.py
+++ b/kivy/core/window/window_sdl2.py
@@ -450,13 +450,6 @@ class WindowSDL(WindowBase):
         else:
             Logger.warning('Window: show() is used only on desktop OSes.')
 
-    @deprecated
-    def toggle_fullscreen(self):
-        if self.fullscreen in (True, 'auto'):
-            self.fullscreen = False
-        else:
-            self.fullscreen = 'auto'
-
     def set_title(self, title):
         self._win.set_window_title(title)