diff --git a/osu.Game/Overlays/Profile/Header/Components/RankGraph.cs b/osu.Game/Overlays/Profile/Header/Components/RankGraph.cs
index 3312cb2c4f..ca5f26e375 100644
--- a/osu.Game/Overlays/Profile/Header/Components/RankGraph.cs
+++ b/osu.Game/Overlays/Profile/Header/Components/RankGraph.cs
@@ -64,12 +64,10 @@ namespace osu.Game.Overlays.Profile.Header.Components
         {
             var days = ranked_days - index + 1;
 
-            return new UserGraphTooltipContent
-            {
-                Name = UsersStrings.ShowRankGlobalSimple,
-                Count = rank.ToLocalisableString("\\##,##0"),
-                Time = days == 0 ? "now" : $"{"day".ToQuantity(days)} ago"
-            };
+            return new UserGraphTooltipContent(
+                UsersStrings.ShowRankGlobalSimple,
+                rank.ToLocalisableString("\\##,##0"),
+                days == 0 ? "now" : $"{"day".ToQuantity(days)} ago");
         }
     }
 }
diff --git a/osu.Game/Overlays/Profile/Sections/Historical/UserHistoryGraph.cs b/osu.Game/Overlays/Profile/Sections/Historical/UserHistoryGraph.cs
index d86e976e70..738edb9310 100644
--- a/osu.Game/Overlays/Profile/Sections/Historical/UserHistoryGraph.cs
+++ b/osu.Game/Overlays/Profile/Sections/Historical/UserHistoryGraph.cs
@@ -28,11 +28,12 @@ namespace osu.Game.Overlays.Profile.Sections.Historical
 
         protected override float GetDataPointHeight(long playCount) => playCount;
 
-        protected override UserGraphTooltipContent GetTooltipContent(DateTime date, long playCount) => new UserGraphTooltipContent
+        protected override UserGraphTooltipContent GetTooltipContent(DateTime date, long playCount)
         {
-            Name = tooltipCounterName,
-            Count = playCount.ToLocalisableString("N0"),
-            Time = date.ToLocalisableString("MMMM yyyy")
-        };
+            return new UserGraphTooltipContent(
+                tooltipCounterName,
+                playCount.ToLocalisableString("N0"),
+                date.ToLocalisableString("MMMM yyyy"));
+        }
     }
 }
diff --git a/osu.Game/Overlays/Profile/UserGraph.cs b/osu.Game/Overlays/Profile/UserGraph.cs
index 502bbbe1a6..f305e3afc3 100644
--- a/osu.Game/Overlays/Profile/UserGraph.cs
+++ b/osu.Game/Overlays/Profile/UserGraph.cs
@@ -295,11 +295,18 @@ namespace osu.Game.Overlays.Profile
         }
     }
 
-    public class UserGraphTooltipContent
+    public readonly struct UserGraphTooltipContent
     {
-        // todo: change to init-only on C# 9
-        public LocalisableString Name { get; set; }
-        public LocalisableString Count { get; set; }
-        public LocalisableString Time { get; set; }
+        // todo: could use init-only properties on C# 9 which read better than a constructor.
+        public LocalisableString Name { get; }
+        public LocalisableString Count { get; }
+        public LocalisableString Time { get; }
+
+        public UserGraphTooltipContent(LocalisableString name, LocalisableString count, LocalisableString time)
+        {
+            Name = name;
+            Count = count;
+            Time = time;
+        }
     }
 }