diff --git a/lib/theme_settings_validator.rb b/lib/theme_settings_validator.rb
index 03385884376..db6725e54dd 100644
--- a/lib/theme_settings_validator.rb
+++ b/lib/theme_settings_validator.rb
@@ -45,7 +45,7 @@ class ThemeSettingsValidator
         )
       when types[:string]
         validate_value_in_range!(
-          value.length,
+          value.to_s.length,
           min: opts[:min],
           max: opts[:max],
           errors:,
diff --git a/spec/fixtures/theme_settings/valid_settings.yaml b/spec/fixtures/theme_settings/valid_settings.yaml
index 4c3e3b480d4..6a39e85924e 100644
--- a/spec/fixtures/theme_settings/valid_settings.yaml
+++ b/spec/fixtures/theme_settings/valid_settings.yaml
@@ -14,6 +14,10 @@ string_setting_03:
   default: "string value"
   textarea: true
 
+string_setting_04:
+  default: 0
+  type: string
+
 integer_setting: 51
 
 integer_setting_02:
diff --git a/spec/lib/theme_settings_validator_spec.rb b/spec/lib/theme_settings_validator_spec.rb
new file mode 100644
index 00000000000..a47d423fc43
--- /dev/null
+++ b/spec/lib/theme_settings_validator_spec.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+RSpec.describe ThemeSettingsValidator do
+  describe ".validate_value" do
+    it "does not throw an error when an integer value is given with type `string`" do
+      errors = described_class.validate_value(1, ThemeSetting.types[:string], {})
+
+      expect(errors).to eq([])
+    end
+  end
+end