diff --git a/Resources/Prototypes/Entities/Structures/Windows/ruranium.yml b/Resources/Prototypes/Entities/Structures/Windows/ruranium.yml
index eb45fe0290..c32a648419 100644
--- a/Resources/Prototypes/Entities/Structures/Windows/ruranium.yml
+++ b/Resources/Prototypes/Entities/Structures/Windows/ruranium.yml
@@ -50,3 +50,5 @@
       sprite: Structures/Windows/cracks.rsi
   - type: StaticPrice
     price: 140
+  - type: RadiationBlocker
+    resistance: 5