diff --git a/packages/wxt/src/core/create-server.ts b/packages/wxt/src/core/create-server.ts
index fb0d9591..557ed5a9 100644
--- a/packages/wxt/src/core/create-server.ts
+++ b/packages/wxt/src/core/create-server.ts
@@ -126,7 +126,7 @@ async function createServerInternal(): Promise<WxtDevServer> {
     async stop() {
       wasStopped = true;
       keyboardShortcuts.stop();
-      await runner.closeBrowser();
+      await runner.closeBrowser?.();
       await builderServer.close();
       await wxt.hooks.callHook('server:closed', wxt, server);
 
@@ -150,7 +150,7 @@ async function createServerInternal(): Promise<WxtDevServer> {
       server.ws.send('wxt:reload-extension');
     },
     async restartBrowser() {
-      await runner.closeBrowser();
+      await runner.closeBrowser?.();
       keyboardShortcuts.stop();
       await wxt.reloadConfig();
       runner = await createExtensionRunner();
diff --git a/packages/wxt/src/core/runners/manual.ts b/packages/wxt/src/core/runners/manual.ts
index 8dfee1a5..2d6e5882 100644
--- a/packages/wxt/src/core/runners/manual.ts
+++ b/packages/wxt/src/core/runners/manual.ts
@@ -15,8 +15,5 @@ export function createManualRunner(): ExtensionRunner {
         )}" as an unpacked extension manually`,
       );
     },
-    async closeBrowser() {
-      // noop
-    },
   };
 }
diff --git a/packages/wxt/src/core/runners/safari.ts b/packages/wxt/src/core/runners/safari.ts
index f3d27c55..a0f77955 100644
--- a/packages/wxt/src/core/runners/safari.ts
+++ b/packages/wxt/src/core/runners/safari.ts
@@ -15,8 +15,5 @@ export function createSafariRunner(): ExtensionRunner {
         )}" as an unpacked extension manually`,
       );
     },
-    async closeBrowser() {
-      // noop
-    },
   };
 }
diff --git a/packages/wxt/src/core/runners/wsl.ts b/packages/wxt/src/core/runners/wsl.ts
index 4fc0b126..34c7d0bb 100644
--- a/packages/wxt/src/core/runners/wsl.ts
+++ b/packages/wxt/src/core/runners/wsl.ts
@@ -15,8 +15,5 @@ export function createWslRunner(): ExtensionRunner {
         )}" as an unpacked extension manually`,
       );
     },
-    async closeBrowser() {
-      // noop
-    },
   };
 }
diff --git a/packages/wxt/src/types.ts b/packages/wxt/src/types.ts
index c76c21d1..43ba58ea 100644
--- a/packages/wxt/src/types.ts
+++ b/packages/wxt/src/types.ts
@@ -1428,7 +1428,9 @@ export interface FsCache {
 
 export interface ExtensionRunner {
   openBrowser(): Promise<void>;
-  closeBrowser(): Promise<void>;
+
+  closeBrowser?(): Promise<void>;
+
   /** Whether or not this runner actually opens the browser. */
   canOpen?(): boolean;
 }