diff --git a/modules/CastBar.lua b/modules/CastBar.lua
index ed0deb1..690dd74 100644
--- a/modules/CastBar.lua
+++ b/modules/CastBar.lua
@@ -358,7 +358,10 @@ end
 
 function CastBar.prototype:CVarUpdate(...)
 	self.useFixedLatency = self.moduleSettings.respectLagTolerance and GetCVar("reducedLagTolerance") == "1"
-	self.fixedLatency = tonumber(GetCVar("maxSpellStartRecoveryoffset")) / 1000
+	local recoveryOffset = GetCVar("maxSpellStartRecoveryoffset")
+	if recoveryOffset ~= nil then
+		self.fixedLatency = tonumber(recoveryOffset) / 1000
+	end
 end
 
 function CastBar.prototype:Disable(core)
diff --git a/modules/GlobalCoolDown.lua b/modules/GlobalCoolDown.lua
index a5dcc48..8300362 100644
--- a/modules/GlobalCoolDown.lua
+++ b/modules/GlobalCoolDown.lua
@@ -45,7 +45,10 @@ end
 
 function GlobalCoolDown.prototype:CVarUpdate()
 	self.useFixedLatency = self.moduleSettings.respectLagTolerance and GetCVar("reducedLagTolerance") == "1"
-	self.fixedLatency = tonumber(GetCVar("maxSpellStartRecoveryoffset")) / 1000.0
+	local recoveryOffset = GetCVar("maxSpellStartRecoveryoffset")
+	if recoveryOffset ~= nil then
+		self.fixedLatency = tonumber(recoveryOffset) / 1000.0
+	end
 end
 
 -- OVERRIDE