diff --git a/README.md b/README.md
index 221cbd3..c34673f 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ The MCP Inspector supports the following configuration settings. To change them,
 | `MCP_REQUEST_TIMEOUT_RESET_ON_PROGRESS` | Reset timeout on progress notifications                                                                      | true    |
 | `MCP_REQUEST_MAX_TOTAL_TIMEOUT`         | Maximum total timeout for requests sent to the MCP server (ms) (Use with progress notifications)             | 60000   |
 | `MCP_PROXY_FULL_ADDRESS`                | Set this if you are running the MCP Inspector Proxy on a non-default address. Example: http://10.1.1.22:5577 | ""      |
-| `MCP_AUTO_OPEN_DISABLED`                | Disable automatic browser opening when inspector starts                                                      | false   |
+| `MCP_AUTO_OPEN_ENABLED`                | Enable automatic browser opening when inspector starts                                                      | true   |
 
 The inspector also supports configuration files to store settings for different MCP servers. This is useful when working with multiple servers or complex configurations:
 
diff --git a/client/bin/start.js b/client/bin/start.js
index 93d77fa..8e383b3 100755
--- a/client/bin/start.js
+++ b/client/bin/start.js
@@ -100,7 +100,7 @@ async function main() {
 
   if (serverOk) {
     try {
-      if (process.env.MCP_AUTO_OPEN_DISABLED !== "true") {
+      if (process.env.MCP_AUTO_OPEN_ENABLED !== "false") {
         open(`http://127.0.0.1:${CLIENT_PORT}`);
       }
       await spawnPromise("node", [inspectorClientPath], {
diff --git a/client/src/components/__tests__/Sidebar.test.tsx b/client/src/components/__tests__/Sidebar.test.tsx
index dffc139..ed3bbb3 100644
--- a/client/src/components/__tests__/Sidebar.test.tsx
+++ b/client/src/components/__tests__/Sidebar.test.tsx
@@ -583,21 +583,21 @@ describe("Sidebar Environment Variables", () => {
       openConfigSection();
 
       const autoOpenDisabledInput = screen.getByTestId(
-        "MCP_AUTO_OPEN_DISABLED-input",
+        "MCP_AUTO_OPEN_ENABLED-input",
       );
       fireEvent.click(autoOpenDisabledInput);
-      const trueOption = screen.getByTestId(
-        "MCP_AUTO_OPEN_DISABLED-input-true",
+      const falseOption = screen.getByTestId(
+        "MCP_AUTO_OPEN_ENABLED-input-false",
       );
-      fireEvent.click(trueOption);
+      fireEvent.click(falseOption);
 
       expect(setConfig).toHaveBeenCalledWith(
         expect.objectContaining({
-          MCP_AUTO_OPEN_DISABLED: {
-            label: "Auto Browser Open Disabled",
+          MCP_AUTO_OPEN_ENABLED: {
+            label: "Auto Browser Open Enabled",
             description:
-              "Disable automatic browser opening when inspector starts",
-            value: true,
+              "Enable automatic browser opening when inspector starts",
+            value: false,
           },
         }),
       );
diff --git a/client/src/lib/configurationTypes.ts b/client/src/lib/configurationTypes.ts
index 1b9736f..f390e6d 100644
--- a/client/src/lib/configurationTypes.ts
+++ b/client/src/lib/configurationTypes.ts
@@ -37,5 +37,5 @@ export type InspectorConfig = {
   /**
    * Disable automatic browser opening when inspector starts.
    */
-  MCP_AUTO_OPEN_DISABLED: ConfigItem;
+  MCP_AUTO_OPEN_ENABLED: ConfigItem;
 };
diff --git a/client/src/lib/constants.ts b/client/src/lib/constants.ts
index 210e160..fc05c06 100644
--- a/client/src/lib/constants.ts
+++ b/client/src/lib/constants.ts
@@ -52,9 +52,9 @@ export const DEFAULT_INSPECTOR_CONFIG: InspectorConfig = {
       "Set this if you are running the MCP Inspector Proxy on a non-default address. Example: http://10.1.1.22:5577",
     value: "",
   },
-  MCP_AUTO_OPEN_DISABLED: {
-    label: "Auto Browser Open Disabled",
-    description: "Disable automatic browser opening when inspector starts",
-    value: false,
+  MCP_AUTO_OPEN_ENABLED: {
+    label: "Auto Browser Open Enabled",
+    description: "Enable automatic browser opening when inspector starts",
+    value: true,
   },
 } as const;