diff --git a/spec/models/color_scheme_spec.rb b/spec/models/color_scheme_spec.rb
index 13cb65d66eb..3a718daa001 100644
--- a/spec/models/color_scheme_spec.rb
+++ b/spec/models/color_scheme_spec.rb
@@ -156,7 +156,7 @@ RSpec.describe ColorScheme do
       expect(resolved["secondary"]).to eq("123123") # From custom scheme
       expect(resolved["tertiary"]).to eq("0088cc") # From `foundation/colors.scss`
     ensure
-      ColorScheme::CUSTOM_SCHEMES.delete(custom_scheme_id)
+      ColorScheme::CUSTOM_SCHEMES.delete(custom_scheme_id.to_sym)
     end
 
     it "calculates 'hover' and 'selected' from existing db colors in dark mode" do