diff --git a/desktop/app/src/chrome/SettingsSheet.tsx b/desktop/app/src/chrome/SettingsSheet.tsx
index 0610932b7..717697f62 100644
--- a/desktop/app/src/chrome/SettingsSheet.tsx
+++ b/desktop/app/src/chrome/SettingsSheet.tsx
@@ -133,7 +133,7 @@ class SettingsSheet extends Component<Props, State> {
       enablePrefetching,
       idbPath,
       reactNative,
-      enableSandy,
+      disableSandy,
       darkMode,
     } = this.state.updatedSettings;
     const {useSandy} = this.props;
@@ -234,17 +234,17 @@ class SettingsSheet extends Component<Props, State> {
           }}
         />
         <SandySettingsPanel
-          toggled={this.state.updatedSettings.enableSandy}
+          toggled={this.state.updatedSettings.disableSandy}
           onChange={(v) => {
             this.setState({
               updatedSettings: {
                 ...this.state.updatedSettings,
-                enableSandy: v,
+                disableSandy: v,
               },
             });
           }}
         />
-        {enableSandy && (
+        {!disableSandy && (
           <ToggledSection
             label="Enable dark theme"
             toggled={darkMode}
diff --git a/desktop/app/src/init.tsx b/desktop/app/src/init.tsx
index 2d702376d..a17622421 100644
--- a/desktop/app/src/init.tsx
+++ b/desktop/app/src/init.tsx
@@ -103,7 +103,7 @@ function init() {
     store,
     {name: 'loadTheme', fireImmediately: true, throttleMs: 500},
     (state) => ({
-      sandy: state.settingsState.enableSandy,
+      sandy: GK.get('flipper_sandy') && !state.settingsState.disableSandy,
       dark: state.settingsState.darkMode,
     }),
     (theme) => {
diff --git a/desktop/app/src/reducers/settings.tsx b/desktop/app/src/reducers/settings.tsx
index ef672cd8d..42e511bdf 100644
--- a/desktop/app/src/reducers/settings.tsx
+++ b/desktop/app/src/reducers/settings.tsx
@@ -43,7 +43,7 @@ export type Settings = {
       openDevMenu: string;
     };
   };
-  enableSandy: boolean;
+  disableSandy: boolean;
   darkMode: boolean;
   showWelcomeAtStartup: boolean;
 };
@@ -78,7 +78,7 @@ const initialState: Settings = {
       openDevMenu: 'Alt+Shift+D',
     },
   },
-  enableSandy: false,
+  disableSandy: false,
   darkMode: false,
   showWelcomeAtStartup: true,
 };
diff --git a/desktop/app/src/utils/useIsDarkMode.tsx b/desktop/app/src/utils/useIsDarkMode.tsx
index 5844070f2..75568c07a 100644
--- a/desktop/app/src/utils/useIsDarkMode.tsx
+++ b/desktop/app/src/utils/useIsDarkMode.tsx
@@ -8,6 +8,7 @@
  */
 
 import {useStore} from '../../../app/src/utils/useStore';
+import GK from '../fb-stubs/GK';
 /**
  * This hook returns whether dark mode is currently being used.
  * Generally should be avoided in favor of using the above theme object,
@@ -15,6 +16,9 @@ import {useStore} from '../../../app/src/utils/useStore';
  */
 export function useIsDarkMode(): boolean {
   return useStore(
-    (state) => state.settingsState.enableSandy && state.settingsState.darkMode,
+    (state) =>
+      GK.get('flipper_sandy') &&
+      !state.settingsState.disableSandy &&
+      state.settingsState.darkMode,
   );
 }