diff --git a/frontend/src/components/OnlyOfficeEditor.tsx b/frontend/src/components/OnlyOfficeEditor.tsx
index aae595c..87fbc85 100644
--- a/frontend/src/components/OnlyOfficeEditor.tsx
+++ b/frontend/src/components/OnlyOfficeEditor.tsx
@@ -37,10 +37,16 @@ export default function OnlyOfficeEditor({ file, type, onClose }: OnlyOfficeEdit
     );
   }
 
-  const API_BASE = process.env.NEXT_PUBLIC_API_URL || 'http://localhost:8080';
+  const getApiBase = () => {
+    if (process.env.NEXT_PUBLIC_API_URL) return process.env.NEXT_PUBLIC_API_URL;
+    if (typeof window !== 'undefined') return window.location.origin;
+    return 'http://localhost:8080';
+  };
+
+  const API_BASE = getApiBase();
   
   // URL that OnlyOffice will use to download the file
-  const fileUrl = `${API_BASE}/api/files/download/${encodeURIComponent(file.path)}?token=${downloadToken}`;
+  const fileUrl = `${API_BASE}/api/files/download/?path=${encodeURIComponent(file.path)}&token=${downloadToken}`;
   
   // Callback URL that OnlyOffice will post to when saving
   const callbackUrl = `${API_BASE}/api/public/onlyoffice/callback?path=${encodeURIComponent(file.path)}&token=${downloadToken}`;
@@ -97,7 +103,7 @@ export default function OnlyOfficeEditor({ file, type, onClose }: OnlyOfficeEdit
       <div className="flex-1 relative">
         <DocumentEditor
           id="docxEditor"
-          documentServerUrl="http://192.168.50.81:8084/"
+          documentServerUrl={typeof window !== 'undefined' ? (window.location.protocol === 'https:' ? `https://${window.location.hostname}:4430/` : `http://${window.location.hostname}:8084/`) : "http://192.168.50.81:8084/"}
           config={config as any}
           events_onDocumentReady={onDocumentReady}
           onLoadComponentError={onLoadComponentError}