diff --git a/pylib/anki/consts.py b/pylib/anki/consts.py
index e7618fa16..e8625d07e 100644
--- a/pylib/anki/consts.py
+++ b/pylib/anki/consts.py
@@ -65,6 +65,7 @@ LEECH_TAGONLY = 1
 
 # Buttons
 BUTTON_ONE = 1
+BUTTON_TWO = 2
 
 # Labels
 ##########################################################################
diff --git a/pylib/anki/sched.py b/pylib/anki/sched.py
index d2ca09ed0..f2428b07c 100644
--- a/pylib/anki/sched.py
+++ b/pylib/anki/sched.py
@@ -569,12 +569,12 @@ did = ? and queue = 3 and due <= ? limit ?""",
             self._rescheduleAsRev(card, conf, True)
             leaving = True
         # graduation time?
-        elif ease == 2 and (card.left % 1000) - 1 <= 0:
+        elif ease == BUTTON_TWO and (card.left % 1000) - 1 <= 0:
             self._rescheduleAsRev(card, conf, False)
             leaving = True
         else:
             # one step towards graduation
-            if ease == 2:
+            if ease == BUTTON_TWO:
                 # decrement real left count and recalculate left today
                 left = (card.left % 1000) - 1
                 card.left = self._leftToday(conf["delays"], left) * 1000 + left
@@ -969,7 +969,7 @@ select id from cards where did in %s and queue = 2 and due <= ? limit ?)"""
         ivl4 = self._constrainedIvl(
             (card.ivl + delay) * fct * conf["ease4"], conf, ivl3
         )
-        if ease == 2:
+        if ease == BUTTON_TWO:
             interval = ivl2
         elif ease == 3:
             interval = ivl3
diff --git a/pylib/anki/schedv2.py b/pylib/anki/schedv2.py
index dcdfe54d8..8b9885e90 100644
--- a/pylib/anki/schedv2.py
+++ b/pylib/anki/schedv2.py
@@ -127,6 +127,7 @@ class Scheduler:
             card.due = intTime() + self._previewDelay(card)
             self.lrnCount += 1
         else:
+            # BUTTON_TWO
             # restore original card state and remove from filtered deck
             self._restorePreviewCard(card)
             self._removeFromFiltered(card)
@@ -627,7 +628,7 @@ did = ? and queue = {QUEUE_TYPE_DAY_LEARN_RELEARN} and due <= ? limit ?""",
                 leaving = True
             else:
                 self._moveToNextStep(card, conf)
-        elif ease == 2:
+        elif ease == BUTTON_TWO:
             self._repeatStep(card, conf)
         else:
             # back to first step
@@ -801,7 +802,7 @@ did = ? and queue = {QUEUE_TYPE_DAY_LEARN_RELEARN} and due <= ? limit ?""",
         if leaving:
             ivl = card.ivl
         else:
-            if ease == 2:
+            if ease == BUTTON_TWO:
                 ivl = -self._delayForRepeatingGrade(conf, card.left)
             else:
                 ivl = -self._delayForGrade(conf, card.left)
@@ -1047,7 +1048,7 @@ select id from cards where did in %s and queue = 2 and due <= ? limit ?)"""
         else:
             hardMin = 0
         ivl2 = self._constrainedIvl(card.ivl * hardFactor, conf, hardMin, fuzz)
-        if ease == 2:
+        if ease == BUTTON_TWO:
             return ivl2
 
         ivl3 = self._constrainedIvl((card.ivl + delay // 2) * fct, conf, ivl2, fuzz)
@@ -1113,7 +1114,7 @@ select id from cards where did in %s and queue = 2 and due <= ? limit ?)"""
         # early 3/4 reviews shouldn't decrease previous interval
         minNewIvl = 1
 
-        if ease == 2:
+        if ease == BUTTON_TWO:
             factor = conf.get("hardFactor", 1.2)
             # hard cards shouldn't have their interval decreased by more than 50%
             # of the normal factor
@@ -1586,7 +1587,7 @@ To study outside of the normal schedule, click the Custom Study button below."""
         if ease == BUTTON_ONE:
             # fail
             return self._delayForGrade(conf, len(conf["delays"]))
-        elif ease == 2:
+        elif ease == BUTTON_TWO:
             return self._delayForRepeatingGrade(conf, card.left)
         elif ease == 4:
             return self._graduatingIvl(card, conf, True, fuzz=False) * 86400