diff --git a/Content.Shared/Humanoid/Prototypes/SpeciesPrototype.cs b/Content.Shared/Humanoid/Prototypes/SpeciesPrototype.cs
index af8a3de30d9..c3aaa1117b7 100644
--- a/Content.Shared/Humanoid/Prototypes/SpeciesPrototype.cs
+++ b/Content.Shared/Humanoid/Prototypes/SpeciesPrototype.cs
@@ -95,6 +95,9 @@ public sealed partial class SpeciesPrototype : IPrototype
     [DataField]
     public string FemaleFirstNames { get; private set; } = "names_first_female";
 
+    [DataField("lastNames")]
+    public string LastNames { get; private set; } = "names_last";
+
     // Corvax-LastnameGender-Start: Split lastname field by gender
     [DataField]
     public string MaleLastNames { get; private set; } = "names_last_male";