diff --git a/osu.Game.Tests/Input/RealmKeyBindingStoreTest.cs b/osu.Game.Tests/Input/RealmKeyBindingStoreTest.cs
index 0e8e73b8b4..fb1e27d9a9 100644
--- a/osu.Game.Tests/Input/RealmKeyBindingStoreTest.cs
+++ b/osu.Game.Tests/Input/RealmKeyBindingStoreTest.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Input.Bindings;
 using osu.Game.Input;
@@ -24,7 +25,7 @@ namespace osu.Game.Tests.Input
                 new RealmKeyBinding(GlobalAction.MusicNext, KeyCombination.FromKey(Key.F5))
             };
 
-            bool anyCleared = RealmKeyBindingStore.ClearDuplicateBindings(bindings);
+            bool anyCleared = RealmKeyBindingStore.ClearDuplicateBindings(bindings.AsQueryable());
 
             Assert.Multiple(() =>
             {
@@ -58,7 +59,7 @@ namespace osu.Game.Tests.Input
                 new RealmKeyBinding(GlobalAction.TakeScreenshot, KeyCombination.FromKey(Key.PrintScreen)),
             };
 
-            bool anyCleared = RealmKeyBindingStore.ClearDuplicateBindings(bindings);
+            bool anyCleared = RealmKeyBindingStore.ClearDuplicateBindings(bindings.AsQueryable());
 
             Assert.Multiple(() =>
             {
diff --git a/osu.Game/Input/RealmKeyBindingStore.cs b/osu.Game/Input/RealmKeyBindingStore.cs
index 6affdab277..ceef751605 100644
--- a/osu.Game/Input/RealmKeyBindingStore.cs
+++ b/osu.Game/Input/RealmKeyBindingStore.cs
@@ -139,7 +139,22 @@ namespace osu.Game.Input
         /// <returns>Whether any bindings have been cleared.</returns>
         public static bool ClearDuplicateBindings(IQueryable<RealmKeyBinding> keyBindings)
         {
-            return false;
+            bool anyRemoved = false;
+
+            var lookup = keyBindings.ToLookup(kb => kb.KeyCombination);
+
+            foreach (var group in lookup)
+            {
+                if (group.Count() <= 1)
+                    continue;
+
+                foreach (var binding in group)
+                    binding.KeyCombination = new KeyCombination(InputKey.None);
+
+                anyRemoved = true;
+            }
+
+            return anyRemoved;
         }
     }
 }