diff --git a/penpot-plugin/src/main.ts b/penpot-plugin/src/main.ts
index fe28cd1..2a44977 100644
--- a/penpot-plugin/src/main.ts
+++ b/penpot-plugin/src/main.ts
@@ -43,7 +43,7 @@ function connectToMcpServer(): void {
 
     try {
         // Use environment variable for MCP WebSocket URL, fallback to localhost for local development
-        const mcpWsUrl = import.meta.env.VITE_MCP_WS_URL || "ws://localhost:4402";
+        const mcpWsUrl = import.meta.env.PENPOT_MCP_WEBSOCKET_URL || "ws://localhost:4402";
         ws = new WebSocket(mcpWsUrl);
         updateConnectionStatus("Connecting...", false);
 
diff --git a/penpot-plugin/vite.config.ts b/penpot-plugin/vite.config.ts
index 3607bf2..1807e12 100644
--- a/penpot-plugin/vite.config.ts
+++ b/penpot-plugin/vite.config.ts
@@ -26,8 +26,8 @@ export default defineConfig({
     preview: {
         port: 4400,
         cors: true,
-        allowedHosts: process.env.VITE_ALLOWED_HOSTS
-            ? process.env.VITE_ALLOWED_HOSTS.split(",").map((h) => h.trim())
+        allowedHosts: process.env.PENPOT_MCP_PLUGIN_SERVER_ALLOWED_HOSTS
+            ? process.env.PENPOT_MCP_PLUGIN_SERVER_ALLOWED_HOSTS.split(",").map((h) => h.trim())
             : ["localhost", "0.0.0.0"],
     },
 });