diff --git a/osu.Game/Graphics/UserInterface/OsuPasswordTextBox.cs b/osu.Game/Graphics/UserInterface/OsuPasswordTextBox.cs
index b7ca25b95a..7f193a0e1a 100644
--- a/osu.Game/Graphics/UserInterface/OsuPasswordTextBox.cs
+++ b/osu.Game/Graphics/UserInterface/OsuPasswordTextBox.cs
@@ -1,11 +1,16 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
 using OpenTK;
 using OpenTK.Graphics;
+using OpenTK.Input;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Cursor;
 using osu.Framework.Graphics.Shapes;
+using osu.Framework.Input;
+using osu.Framework.Platform;
 
 namespace osu.Game.Graphics.UserInterface
 {
@@ -15,6 +20,49 @@ namespace osu.Game.Graphics.UserInterface
 
         public override bool AllowClipboardExport => false;
 
+        private readonly CapsWarning warning;
+
+        private GameHost host;
+
+        public OsuPasswordTextBox()
+        {
+            Add(warning = new CapsWarning
+            {
+                Size = new Vector2(20),
+                Origin = Anchor.CentreRight,
+                Anchor = Anchor.CentreRight,
+                Margin = new MarginPadding { Right = 10 },
+                Alpha = 0,
+            });
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(GameHost host)
+        {
+            this.host = host;
+        }
+
+        protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
+        {
+            if (args.Key == Key.CapsLock)
+                updateCapsWarning(host.CapsLockEnabled);
+            return base.OnKeyDown(state, args);
+        }
+
+        protected override void OnFocus(InputState state)
+        {
+            updateCapsWarning(host.CapsLockEnabled);
+            base.OnFocus(state);
+        }
+
+        protected override void OnFocusLost(InputState state)
+        {
+            updateCapsWarning(false);
+            base.OnFocusLost(state);
+        }
+
+        private void updateCapsWarning(bool visible) => warning.FadeTo(visible ? 1 : 0, 250, Easing.OutQuint);
+
         public class PasswordMaskChar : Container
         {
             private readonly CircularContainer circle;
@@ -51,5 +99,21 @@ namespace osu.Game.Graphics.UserInterface
                 circle.ResizeTo(new Vector2(0.8f), 500, Easing.OutQuint);
             }
         }
+
+        private class CapsWarning : SpriteIcon, IHasTooltip
+        {
+            public string TooltipText => @"Caps lock is active";
+
+            public CapsWarning()
+            {
+                Icon = FontAwesome.fa_warning;
+            }
+
+            [BackgroundDependencyLoader]
+            private void load(OsuColour colour)
+            {
+                Colour = colour.YellowLight;
+            }
+        }
     }
 }