diff --git a/osu.Game.Rulesets.Mania.Tests/ManiaDifficultyCalculatorTest.cs b/osu.Game.Rulesets.Mania.Tests/ManiaDifficultyCalculatorTest.cs
index 715614a201..a5bd126782 100644
--- a/osu.Game.Rulesets.Mania.Tests/ManiaDifficultyCalculatorTest.cs
+++ b/osu.Game.Rulesets.Mania.Tests/ManiaDifficultyCalculatorTest.cs
@@ -14,11 +14,11 @@ namespace osu.Game.Rulesets.Mania.Tests
     {
         protected override string ResourceAssembly => "osu.Game.Rulesets.Mania";
 
-        [TestCase(2.3449735700206298d, 151, "diffcalc-test")]
+        [TestCase(2.3449735700206298d, 242, "diffcalc-test")]
         public void Test(double expectedStarRating, int expectedMaxCombo, string name)
             => base.Test(expectedStarRating, expectedMaxCombo, name);
 
-        [TestCase(2.7879104989252959d, 151, "diffcalc-test")]
+        [TestCase(2.7879104989252959d, 242, "diffcalc-test")]
         public void TestClockRateAdjusted(double expectedStarRating, int expectedMaxCombo, string name)
             => Test(expectedStarRating, expectedMaxCombo, name, new ManiaModDoubleTime());
 
diff --git a/osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyAttributes.cs b/osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyAttributes.cs
index 5b7a460079..c35a3dcdc2 100644
--- a/osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyAttributes.cs
+++ b/osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyAttributes.cs
@@ -29,7 +29,7 @@ namespace osu.Game.Rulesets.Mania.Difficulty
             foreach (var v in base.ToDatabaseAttributes())
                 yield return v;
 
-            // Todo: osu!mania doesn't output MaxCombo attribute for some reason.
+            yield return (ATTRIB_ID_MAX_COMBO, MaxCombo);
             yield return (ATTRIB_ID_DIFFICULTY, StarRating);
             yield return (ATTRIB_ID_GREAT_HIT_WINDOW, GreatHitWindow);
             yield return (ATTRIB_ID_SCORE_MULTIPLIER, ScoreMultiplier);
@@ -39,6 +39,7 @@ namespace osu.Game.Rulesets.Mania.Difficulty
         {
             base.FromDatabaseAttributes(values);
 
+            MaxCombo = (int)values[ATTRIB_ID_MAX_COMBO];
             StarRating = values[ATTRIB_ID_DIFFICULTY];
             GreatHitWindow = values[ATTRIB_ID_GREAT_HIT_WINDOW];
             ScoreMultiplier = values[ATTRIB_ID_SCORE_MULTIPLIER];
diff --git a/osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyCalculator.cs b/osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyCalculator.cs
index b17aa7fc4d..88f51bf961 100644
--- a/osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyCalculator.cs
+++ b/osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyCalculator.cs
@@ -52,10 +52,18 @@ namespace osu.Game.Rulesets.Mania.Difficulty
                 // This is done the way it is to introduce fractional differences in order to match osu-stable for the time being.
                 GreatHitWindow = Math.Ceiling((int)(getHitWindow300(mods) * clockRate) / clockRate),
                 ScoreMultiplier = getScoreMultiplier(mods),
-                MaxCombo = beatmap.HitObjects.Sum(h => h is HoldNote ? 2 : 1),
+                MaxCombo = beatmap.HitObjects.Sum(maxComboForObject)
             };
         }
 
+        private static int maxComboForObject(HitObject hitObject)
+        {
+            if (hitObject is HoldNote hold)
+                return 1 + (int)((hold.EndTime - hold.StartTime) / 100);
+
+            return 1;
+        }
+
         protected override IEnumerable<DifficultyHitObject> CreateDifficultyHitObjects(IBeatmap beatmap, double clockRate)
         {
             var sortedObjects = beatmap.HitObjects.ToArray();