diff --git a/spec/super_good/solidus_taxjar/calculator_helper_spec.rb b/spec/super_good/solidus_taxjar/calculator_helper_spec.rb
index 14472ffc..93bc9121 100644
--- a/spec/super_good/solidus_taxjar/calculator_helper_spec.rb
+++ b/spec/super_good/solidus_taxjar/calculator_helper_spec.rb
@@ -24,12 +24,18 @@ class TestProxy
     end
 
     context "with a missing state in CA" do
-      let(:address) { build :address, country_iso_code: "CA", state: nil }
+      let(:address) { build :address, country_iso_code: "CA" }
+
+      before { address.state = nil }
+
       it { is_expected.to eq(true) }
     end
 
     context "with a missing state in US" do
-      let(:address) { build :address, country_iso_code: "US", state: nil }
+      let(:address) { build :address, country_iso_code: "US" }
+
+      before { address.state = nil }
+
       it { is_expected.to eq(true) }
     end