diff --git a/zone/effects.cpp b/zone/effects.cpp
index 72bc518f5..48e30639c 100644
--- a/zone/effects.cpp
+++ b/zone/effects.cpp
@@ -99,7 +99,7 @@ int32 Client::GetActSpellDamage(uint16 spell_id, int32 value, Mob* target) {
 		}
 
 		else if (GetClass() == WIZARD && (GetLevel() >= RuleI(Spells, WizCritLevel)) && (MakeRandomInt(1,100) <= RuleI(Spells, WizCritChance))) {
-			ratio = MakeRandomInt(1,100); //Wizard innate critical chance is calculated seperately from spell effect and is not a set ratio.
+			ratio += MakeRandomInt(1,100); //Wizard innate critical chance is calculated seperately from spell effect and is not a set ratio.
 			Critical = true;
 		}