diff --git a/Resources/Prototypes/Damage/modifier_sets.yml b/Resources/Prototypes/Damage/modifier_sets.yml
index f04858255f..3a3a372b6e 100644
--- a/Resources/Prototypes/Damage/modifier_sets.yml
+++ b/Resources/Prototypes/Damage/modifier_sets.yml
@@ -161,7 +161,6 @@
     Piercing: 1.2
     Cold: 1.5
     Poison: 0.8
-    Cellular: 0.2
 
 - type: damageModifierSet
   id: Infernal
diff --git a/Resources/ServerInfo/Guidebook/Mobs/SlimePerson.xml b/Resources/ServerInfo/Guidebook/Mobs/SlimePerson.xml
index 976ab472a9..24029d68d0 100644
--- a/Resources/ServerInfo/Guidebook/Mobs/SlimePerson.xml
+++ b/Resources/ServerInfo/Guidebook/Mobs/SlimePerson.xml
@@ -20,6 +20,6 @@
   moderately filling food for other species, although drinking the blood of your coworkers is usually frowned upon.
   They suffocate 80% slower, but take pressure damage 9% faster. This makes them by far the species most capable to survive in hard vacuum. For a while.
 
-  They take [color=#1e90ff]80% less Cellular damage, 40% less Blunt damage and 20% less Poison damage[/color], but [color=#ffa500]50% more Cold damage, 20% more Slash damage and 20% more Piercing damage[/color].
+  They take [color=#1e90ff]40% less Blunt damage and 20% less Poison damage[/color], but [color=#ffa500]50% more Cold damage, 20% more Slash damage and 20% more Piercing damage[/color].
 
 </Document>