diff --git a/OTAPI.Scripts/Patches/PatchNpcStrikeArgs.Server.cs b/OTAPI.Scripts/Patches/PatchNpcStrikeArgs.Server.cs
index 5b107616..42378904 100644
--- a/OTAPI.Scripts/Patches/PatchNpcStrikeArgs.Server.cs
+++ b/OTAPI.Scripts/Patches/PatchNpcStrikeArgs.Server.cs
@@ -101,22 +101,16 @@ instr.Previous.Operand is FieldReference fieldReference &&
 
                             case "Player.ApplyDamageToNPC":
                             case "Player.ItemCheck_MeleeHitNPCs":
-                            case "Projectile.Damage":
                             case "Player.ProcessHitAgainstNPC":
                             case "NPC.StrikeNPC":
+#if TerrariaServer_1450_OrAbove || Terraria__1450_OrAbove || tModLoader_1450_OrAbove
+                            case "Projectile.Damage_PVE_Inner": // introduced/split in 145+
+#endif
                                 body.GetILProcessor().InsertBefore(instr,
                                     new { OpCodes.Ldarg_0 }
                                 );
                                 break;
 
-                            case "Projectile.Damage_PVE_Inner":
-                                // find the NPC parameter
-                                var prm = body.Method.Parameters.Single(x => x.ParameterType.FullName == "Terraria.NPC");
-                                body.GetILProcessor().InsertBefore(instr,
-                                    new { OpCodes.Ldarg, Operand = prm }
-                                );
-                                break;
-
                             default:
                                 throw new NotImplementedException($"{body.Method.FullName} is not a supported caller for this modification");
                         }