diff --git a/spec/models/calculator_spec.rb b/spec/models/calculator_spec.rb
index ed46e483f..de3911cba 100644
--- a/spec/models/calculator_spec.rb
+++ b/spec/models/calculator_spec.rb
@@ -29,12 +29,12 @@
     it { is_expected.to validate_presence_of(:uk_name) }
     it { is_expected.to validate_length_of(:uk_name).is_at_least(3).is_at_most(50) }
     it { is_expected.to validate_uniqueness_of(:slug) }
-    it { is_expected.to allow_value('#123abc').for(:color) }
-    it { is_expected.to allow_value('#ABCDEF').for(:color) }
-    it { is_expected.not_to allow_value('123abc').for(:color) }
-    it { is_expected.not_to allow_value('#12345').for(:color) }
-    it { is_expected.not_to allow_value('#1234567').for(:color) }
-    it { is_expected.not_to allow_value('#GHIJKL').for(:color) }
+    it { is_expected.to allow_value("#123abc").for(:color) }
+    it { is_expected.to allow_value("#ABCDEF").for(:color) }
+    it { is_expected.not_to allow_value("123abc").for(:color) }
+    it { is_expected.not_to allow_value("#12345").for(:color) }
+    it { is_expected.not_to allow_value("#1234567").for(:color) }
+    it { is_expected.not_to allow_value("#GHIJKL").for(:color) }
   end
 
   describe "associations" do