diff --git a/eris/eris/__main__.py b/eris/eris/__main__.py
index c30e4f1..e886ab3 100755
--- a/eris/eris/__main__.py
+++ b/eris/eris/__main__.py
@@ -615,10 +615,10 @@ class Help:
 
     def on_mouse_input(self, term_code):
         event = terminal.decode_mouse_input(term_code)
-        if event[1] == terminal.WHEEL_UP_MOUSE:
+        if event[1] == terminal.MOUSE_WHEEL_UP:
             self.view.portal.scroll_up()
             fiil3.APPEARANCE_CHANGED_EVENT.set()
-        elif event[1] == terminal.WHEEL_DOWN_MOUSE:
+        elif event[1] == terminal.MOUSE_WHEEL_DOWN:
             self.view.portal.scroll_down()
             fill3.APPEARANCE_CHANGED_EVENT.set()
 
@@ -866,10 +866,10 @@ class Screen:
             self._help_widget.on_mouse_input(term_code)
             return
         event = terminal.decode_mouse_input(term_code)
-        if event[0] not in [terminal.PRESS_MOUSE, terminal.DRAG_MOUSE]:
+        if event[0] not in [terminal.MOUSE_PRESS, terminal.MOUSE_DRAG]:
             return
         x, y = event[2:4]
-        if event[0] == terminal.DRAG_MOUSE:
+        if event[0] == terminal.MOUSE_DRAG:
             last_x, last_y = self._last_mouse_position
             dx, dy = x - last_x, y - last_y
             if self._is_summary_focused:
@@ -877,9 +877,9 @@ class Screen:
             else:
                 self._move_listing((-dx, -dy))
         else:  # Mouse press
-            if event[1] == terminal.WHEEL_UP_MOUSE:
+            if event[1] == terminal.MOUSE_WHEEL_UP:
                 self.listing_page_up()
-            elif event[1] == terminal.WHEEL_DOWN_MOUSE:
+            elif event[1] == terminal.MOUSE_WHEEL_DOWN:
                 self.listing_page_down()
             else:
                 view_width, view_height = self._summary._view_widget.portal.last_dimensions
diff --git a/fill3/fill3/terminal.py b/fill3/fill3/terminal.py
index aba8764..f2c52e5 100644
--- a/fill3/fill3/terminal.py
+++ b/fill3/fill3/terminal.py
@@ -81,12 +81,12 @@ def interactive():
 
 
 MOUSE = ESC + "[M"
-RELEASE_MOUSE = 0
-DRAG_MOUSE = 1
-CLICK_MOUSE = 2
-PRESS_MOUSE = 3
-WHEEL_UP_MOUSE = 4
-WHEEL_DOWN_MOUSE = 5
+MOUSE_RELEASE = 0
+MOUSE_DRAG = 1
+MOUSE_CLICK = 2
+MOUSE_PRESS = 3
+MOUSE_WHEEL_UP = 4
+MOUSE_WHEEL_DOWN = 5
 
 
 def decode_mouse_input(term_code):
@@ -95,14 +95,14 @@ def decode_mouse_input(term_code):
     x, y = (keys[1] - 33) % 256, (keys[2] - 33) % 256
     button = ((b & 64) / 64 * 3) + (b & 3) + 1
     if b & 3 == 3:
-        action = RELEASE_MOUSE
+        action = MOUSE_RELEASE
         button = 0
     elif b & 2048:
-        action = RELEASE_MOUSE
+        action = MOUSE_RELEASE
     elif b & 32:
-        action = DRAG_MOUSE
+        action = MOUSE_DRAG
     elif b & 1536:
-        action = CLICK_MOUSE
+        action = MOUSE_CLICK
     else:
-        action = PRESS_MOUSE
-    return (action, button, x, y)
+        action = MOUSE_PRESS
+    return action, button, x, y