diff --git a/README.md b/README.md
index b0e18de..c43f943 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,7 @@ The MCP Inspector supports the following configuration settings. To change them
 | Name                       | Purpose                                                                                   | Default Value |
 | -------------------------- | ----------------------------------------------------------------------------------------- | ------------- |
 | MCP_SERVER_REQUEST_TIMEOUT | Maximum time in milliseconds to wait for a response from the MCP server before timing out | 10000         |
+| MCP_PROXY_FULL_ADDRESS     | The full URL of the MCP Inspector proxy server (e.g. `http://10.2.1.14:2277`)             | `null`        |
 
 ### From this repository
 
diff --git a/client/src/lib/hooks/useConnection.ts b/client/src/lib/hooks/useConnection.ts
index 0bb8124..404cd98 100644
--- a/client/src/lib/hooks/useConnection.ts
+++ b/client/src/lib/hooks/useConnection.ts
@@ -233,14 +233,13 @@ export function useConnection({
       },
     );
 
-    const mcpProxyServerUrl = new URL(`${proxyServerUrl}/sse`);
     try {
       await checkProxyHealth();
     } catch {
       setConnectionStatus("error-connecting-to-proxy");
       return;
     }
-
+    const mcpProxyServerUrl = new URL(`${proxyServerUrl}/sse`);
     mcpProxyServerUrl.searchParams.append("transportType", transportType);
     if (transportType === "stdio") {
       mcpProxyServerUrl.searchParams.append("command", command);