diff --git a/code/__DEFINES/~~bubber_defines/combat.dm b/code/__DEFINES/~~bubber_defines/combat.dm
index 1553bfce8de..8430f889bd1 100644
--- a/code/__DEFINES/~~bubber_defines/combat.dm
+++ b/code/__DEFINES/~~bubber_defines/combat.dm
@@ -2,3 +2,6 @@
 #define JOULES_PER_DAMAGE (30 KILO JOULES)
 /// Calculates the amount of burn force when applying this much energy to a mob via electrocution from an energy source.
 #define ELECTROCUTE_DAMAGE(energy) (energy >= 1 KILO JOULES ? clamp(round(energy / JOULES_PER_DAMAGE) + rand(-5,5), 10, (HUMAN_MAXHEALTH-10)) : 0)
+
+/// Health buff for having the oversized quirk.
+#define OVERSIZED_HEALTH_BUFF 1.4
diff --git a/modular_zubbers/code/datums/quirks/neutral_quirks/oversized_quirk.dm b/modular_zubbers/code/datums/quirks/neutral_quirks/oversized_quirk.dm
index 0c69761e905..d6f8c7a9768 100644
--- a/modular_zubbers/code/datums/quirks/neutral_quirks/oversized_quirk.dm
+++ b/modular_zubbers/code/datums/quirks/neutral_quirks/oversized_quirk.dm
@@ -20,6 +20,8 @@
 	human_holder.maptext_height = 32 * human_holder.dna.features["body_size"] //Adjust runechat height
 	human_holder.dna.update_body_size()
 	human_holder.mob_size = MOB_SIZE_LARGE
+	human_holder.maxHealth = HUMAN_MAXHEALTH * OVERSIZED_HEALTH_BUFF
+	human_holder.health += ((HUMAN_MAXHEALTH * OVERSIZED_HEALTH_BUFF) - HUMAN_MAXHEALTH)
 
 	RegisterSignal(human_holder, COMSIG_CARBON_POST_ATTACH_LIMB, PROC_REF(on_gain_limb)) // make sure we handle this when new ones are applied
 
@@ -50,6 +52,8 @@
 	human_holder.maptext_height = 32 * human_holder.dna.features["body_size"]
 	human_holder.dna.update_body_size()
 	human_holder.mob_size = MOB_SIZE_HUMAN
+	human_holder.maxHealth = HUMAN_MAXHEALTH
+	human_holder.health -= ((HUMAN_MAXHEALTH * OVERSIZED_HEALTH_BUFF) - HUMAN_MAXHEALTH)
 
 	var/obj/item/bodypart/arm/left/left_arm = human_holder.get_bodypart(BODY_ZONE_L_ARM)
 	if(left_arm)