diff --git a/src/Discord.Net.Core/Extensions/ObjectExtensions.cs b/src/Discord.Net.Core/Extensions/ObjectExtensions.cs
index 8c679bce..0c882b28 100644
--- a/src/Discord.Net.Core/Extensions/ObjectExtensions.cs
+++ b/src/Discord.Net.Core/Extensions/ObjectExtensions.cs
@@ -20,6 +20,7 @@ namespace Discord
                 TypeCode.UInt16 => (ushort.MinValue, ushort.MaxValue),
                 TypeCode.Int32 => (int.MinValue, int.MaxValue),
                 TypeCode.UInt32 => (uint.MinValue, uint.MaxValue),
+                TypeCode.UInt64 => (ulong.MinValue, Int53Max),
                 _ => (Int53Min, Int53Max)
             };