diff --git a/osu.Game/Input/Bindings/DatabasedKeyBindingContainer.cs b/osu.Game/Input/Bindings/DatabasedKeyBindingContainer.cs
index 5f500d3023..10376c1866 100644
--- a/osu.Game/Input/Bindings/DatabasedKeyBindingContainer.cs
+++ b/osu.Game/Input/Bindings/DatabasedKeyBindingContainer.cs
@@ -83,8 +83,9 @@ namespace osu.Game.Input.Bindings
             var defaults = DefaultKeyBindings.ToList();
 
             if (ruleset != null && !ruleset.ID.HasValue)
-                // if the provided ruleset is not stored to the database, we have no way to retrieve custom bindings.
-                // fallback to defaults instead.
+                // some tests instantiate a ruleset which is not present in the database.
+                // in these cases we still want key bindings to work, but matching to database instances would result in none being present,
+                // so let's populate the defaults directly.
                 KeyBindings = defaults;
             else
             {