diff --git a/electron/Index.vue b/electron/Index.vue
index 3430c04..3441c6b 100644
--- a/electron/Index.vue
+++ b/electron/Index.vue
@@ -490,7 +490,7 @@
             return {
               [`theme-${this.settings.theme}`]: true,
               colorblindMode: core.state.settings.risingColorblindMode,
-              disableWindowsHighContrast: core.state.generalSettings?.risingDisableWindowsHighContrast
+              disableWindowsHighContrast: core.state.generalSettings?.risingDisableWindowsHighContrast || false
             };
           } catch(err) {
             return { [`theme-${this.settings.theme}`]: true };
diff --git a/electron/Window.vue b/electron/Window.vue
index c6885bd..0bcd141 100644
--- a/electron/Window.vue
+++ b/electron/Window.vue
@@ -384,7 +384,7 @@
           try {
             return {
               ['platform-' + this.platform]: true,
-              disableWindowsHighContrast: core.state.generalSettings?.risingDisableWindowsHighContrast
+              disableWindowsHighContrast: core.state.generalSettings?.risingDisableWindowsHighContrast || false
             };
           } catch (err) {
             return {