diff --git a/module/Apps/components/Icon.mjs b/module/Apps/components/Icon.mjs
index 3a8e961..48e51b2 100644
--- a/module/Apps/components/Icon.mjs
+++ b/module/Apps/components/Icon.mjs
@@ -71,7 +71,7 @@ export class RipCryptIcon extends StyledShadowElement(HTMLElement) {
 		This is so that when we get an HMR event from Foundry we can appropriately
 		handle it using our logic to update the component and the icon cache.
 		*/
-		if (game.settings.get(`ripcrypt`, `devMode`)) {
+		if (game.system.flags.inDev) {
 			this.#svgHmr = Hooks.on(`${game.system.id}-hmr:svg`, (iconName, data) => {
 				if (this._name === iconName || this._path?.endsWith(data.path)) {
 					const svg = this.#parseSVG(data.content);
diff --git a/module/data/Item/Armour.mjs b/module/data/Item/Armour.mjs
index f2a1b0a..146b6af 100644
--- a/module/data/Item/Armour.mjs
+++ b/module/data/Item/Armour.mjs
@@ -57,7 +57,7 @@ export class ArmourData extends CommonItemData {
 	};
 
 	async _preUpdate(changes, options, user) {
-		if (options.force && game.settings.get(`ripcrypt`, `devMode`)) { return };
+		if (options.force && game.system.flags.inDev) { return };
 
 		// Ensure changes is a diffed object
 		const diff = diffObject(this.parent._source, changes);
diff --git a/module/data/Item/Weapon.mjs b/module/data/Item/Weapon.mjs
index c4db30f..ae7a359 100644
--- a/module/data/Item/Weapon.mjs
+++ b/module/data/Item/Weapon.mjs
@@ -70,7 +70,7 @@ export class WeaponData extends CommonItemData {
 	 * @returns
 	 */
 	async _preUpdate(changes, options, user) {
-		if (options.force && game.settings.get(`ripcrypt`, `devMode`)) { return };
+		if (options.force && game.system.flags.inDev) { return };
 
 		const diff = diffObject(this.parent._source, changes);
 		let valid = super._preUpdate(changes, options, user);
diff --git a/module/hooks/init.mjs b/module/hooks/init.mjs
index 4b46bc0..272a082 100644
--- a/module/hooks/init.mjs
+++ b/module/hooks/init.mjs
@@ -34,7 +34,6 @@ import { RipCryptToken } from "../documents/token.mjs";
 import helpers from "../handlebarHelpers/_index.mjs";
 import { Logger } from "../utils/Logger.mjs";
 import { registerCustomComponents } from "../Apps/components/_index.mjs";
-import { registerDevSettings } from "../settings/devSettings.mjs";
 import { registerMetaSettings } from "../settings/metaSettings.mjs";
 import { registerSockets } from "../sockets/_index.mjs";
 import { registerUserSettings } from "../settings/userSettings.mjs";
@@ -51,7 +50,6 @@ Hooks.once(`init`, () => {
 
 	// #region Settings
 	registerMetaSettings();
-	registerDevSettings();
 	registerUserSettings();
 	registerWorldSettings();
 	// #endregion
diff --git a/module/hooks/ready.mjs b/module/hooks/ready.mjs
index e77e0e7..935fdec 100644
--- a/module/hooks/ready.mjs
+++ b/module/hooks/ready.mjs
@@ -3,23 +3,6 @@ import { Logger } from "../utils/Logger.mjs";
 
 Hooks.once(`ready`, () => {
 	Logger.log(`Ready`);
-
-	let defaultTab = game.settings.get(`ripcrypt`, `defaultTab`);
-	if (defaultTab) {
-		try {
-			Logger.debug(`Switching sidebar tab to:`, defaultTab);
-			ui.sidebar.changeTab(defaultTab, `primary`);
-		}
-		catch {
-			Logger.error(`Failed to change to sidebar tab:`, defaultTab);
-		};
-	};
-
-	if (game.settings.get(`ripcrypt`, `devMode`)) {
-		ui.sidebar.expand();
-		if (game.paused) { game.togglePause(false, { broadcast: true }) };
-	};
-
 	ui.delveDice.render({ force: true });
 
 	// MARK: 1-time updates
diff --git a/module/settings/devSettings.mjs b/module/settings/devSettings.mjs
deleted file mode 100644
index 69767d9..0000000
--- a/module/settings/devSettings.mjs
+++ /dev/null
@@ -1,17 +0,0 @@
-export function registerDevSettings() {
-	game.settings.register(`ripcrypt`, `devMode`, {
-		scope: `client`,
-		type: Boolean,
-		config: false,
-		default: false,
-		requiresReload: false,
-	});
-
-	game.settings.register(`ripcrypt`, `defaultTab`, {
-		name: `Default Tab`,
-		scope: `client`,
-		type: String,
-		config: game.settings.get(`ripcrypt`, `devMode`),
-		requiresReload: false,
-	});
-};