diff --git a/pybricks/_display.py b/pybricks/_display.py
index 9f7f379..5c113c7 100644
--- a/pybricks/_display.py
+++ b/pybricks/_display.py
@@ -39,8 +39,8 @@ class Display():
 
         pass
 
-    def image(self, file_name, alignment=Align.center, coordinate=None, clear=True):
-        """image(file_name, alignment=Align.center, coordinate=None, clear=True)
+    def image(self, file_name, alignment=Align.CENTER, coordinate=None, clear=True):
+        """image(file_name, alignment=Align.CENTER, coordinate=None, clear=True)
 
         Show an image file.
 
@@ -48,7 +48,7 @@ class Display():
 
         Arguments:
             file_name (str): Path to the image file. Paths may be absolute or relative from the project folder.
-            alignment (Align): Where to place the image (*Default*: Align.center).
+            alignment (Align): Where to place the image (*Default*: Align.CENTER).
             coordinate (tuple): ``(x, y)`` coordinate tuple. It is the top-left corner of the image (*Default*: None).
             clear (bool): Whether to clear the screen before showing the image (*Default*: ``True``).
 
@@ -62,7 +62,7 @@ class Display():
 
             # Display a custom image image at the top right of the screen, without clearing
             # the screen first
-            brick.display.image('arrow.png', Align.top_right, clear=False)
+            brick.display.image('arrow.png', Align.TOP_RIGHT, clear=False)
         """
         pass
 
diff --git a/pybricks/parameters.py b/pybricks/parameters.py
index f6014be..be88508 100644
--- a/pybricks/parameters.py
+++ b/pybricks/parameters.py
@@ -197,25 +197,25 @@ class Button(Enum):
 class Align():
     """Alignment of an image on the display.
 
-    .. data:: bottom_left
-    .. data:: bottom
-    .. data:: bottom_right
-    .. data:: left
-    .. data:: center
-    .. data:: right
-    .. data:: top_left
-    .. data:: top
-    .. data:: top_right
+    .. data:: BOTTOM_LEFT
+    .. data:: BOTTOM
+    .. data:: BOTTOM_RIGHT
+    .. data:: LEFT
+    .. data:: CENTER
+    .. data:: RIGHT
+    .. data:: TOP_LEFT
+    .. data:: TOP
+    .. data:: TOP_RIGHT
     """
-    bottom_left = 1
-    bottom = 2
-    bottom_right = 3
-    left = 4
-    center = 5
-    right = 6
-    top_left = 7
-    top = 8
-    top_right = 9
+    BOTTOM_LEFT = 1
+    BOTTOM = 2
+    BOTTOM_RIGHT = 3
+    LEFT = 4
+    CENTER = 5
+    RIGHT = 6
+    TOP_LEFT = 7
+    TOP = 8
+    TOP_RIGHT = 9
 
 
 class Sound():