diff --git a/lib/subcommands/boot.ts b/lib/subcommands/boot.ts
index c2dfc0c..da523a5 100644
--- a/lib/subcommands/boot.ts
+++ b/lib/subcommands/boot.ts
@@ -14,7 +14,7 @@ export async function bootDevice(this: Simctl): Promise<void> {
       args: [this.requireUdid('boot')],
     });
   } catch (e: any) {
-    if (e.message?.includes('Unable to boot device in current state: Booted')) {
+    if (!e.message?.includes('Unable to boot device in current state: Booted')) {
       throw e;
     }
     log.debug(LOG_PREFIX, `Simulator already in 'Booted' state. Continuing`);
diff --git a/test/unit/simctl.spec.ts b/test/unit/simctl.spec.ts
index 6d4d181..d4741c9 100644
--- a/test/unit/simctl.spec.ts
+++ b/test/unit/simctl.spec.ts
@@ -349,6 +349,38 @@ describe('simctl', function () {
       await assert.rejects(() => simctl.setLocation(0, 'Infinity'), TypeError);
     });
   });
+
+  describe('#bootDevice', function () {
+    let simctl: Simctl;
+
+    beforeEach(function () {
+      simctl = stubSimctl({path: 'xcrun'});
+      simctl.udid = 'EE76EA77-E975-4198-9859-69DFF74252D2';
+    });
+    afterEach(function () {
+      if (execStub) {
+        execStub.restore();
+      }
+    });
+
+    it('should boot the device', async function () {
+      await simctl.bootDevice();
+      assert.strictEqual(execStub.getCall(0).args[0], 'boot');
+      assert.deepStrictEqual(execStub.getCall(0).args[1].args, ['EE76EA77-E975-4198-9859-69DFF74252D2']);
+    });
+    it('should not throw if the device is already booted', async function () {
+      execStub.rejects(new Error('Unable to boot device in current state: Booted'));
+      await assert.doesNotReject(simctl.bootDevice());
+    });
+    it('should rethrow other boot errors', async function () {
+      execStub.rejects(new Error('Invalid device: EE76EA77-E975-4198-9859-69DFF74252D2'));
+      await assert.rejects(simctl.bootDevice(), /Invalid device/);
+    });
+    it('should throw if udid is not set', async function () {
+      simctl.udid = null;
+      await assert.rejects(simctl.bootDevice(), /udid is required/);
+    });
+  });
 });
 
 function getModuleRootSync(): string {