diff --git a/Resources/Prototypes/Reagents/medicine.yml b/Resources/Prototypes/Reagents/medicine.yml
index a8f5a8cfcd..e30432c8d1 100644
--- a/Resources/Prototypes/Reagents/medicine.yml
+++ b/Resources/Prototypes/Reagents/medicine.yml
@@ -42,8 +42,9 @@
       effects:
       - !type:HealthChange
         damage:
-          groups:
+          types:
             Radiation: -3
+          groups:
             Brute: 0.5
 
 - type: reagent