diff --git a/Resources/Prototypes/silicon-laws.yml b/Resources/Prototypes/silicon-laws.yml
index a0804e4c88..8a521d8544 100644
--- a/Resources/Prototypes/silicon-laws.yml
+++ b/Resources/Prototypes/silicon-laws.yml
@@ -625,3 +625,5 @@
     OverrideLaws: 0.25
     StreamerLaws: 1
     #Delta-V : lawsets end
+    MothershipCoreLawset: 0.25
+    XenoborgLawset: 0.25