diff --git a/components/PresentationFormHeader.tsx b/components/PresentationFormHeader.tsx
index 3089ab9..5b99479 100644
--- a/components/PresentationFormHeader.tsx
+++ b/components/PresentationFormHeader.tsx
@@ -19,4 +19,3 @@ export function PresentationFormHeader({ userName }: PresentationFormHeaderProps
     </div>
   )
 }
-
diff --git a/lib/nip95.ts b/lib/nip95.ts
index d48bbce..e6c29d6 100644
--- a/lib/nip95.ts
+++ b/lib/nip95.ts
@@ -38,7 +38,9 @@ export async function uploadNip95Media(file: File): Promise<MediaRef> {
 
   const endpoint = process.env.NEXT_PUBLIC_NIP95_UPLOAD_URL
   if (!endpoint) {
-    throw new Error('NIP-95 upload endpoint is not configured')
+    throw new Error(
+      'NIP-95 upload endpoint is not configured. Please set NEXT_PUBLIC_NIP95_UPLOAD_URL environment variable. See README.md for setup instructions.'
+    )
   }
 
   const formData = new FormData()