diff --git a/VoidCat/Controllers/UploadController.cs b/VoidCat/Controllers/UploadController.cs
index c3c83a9..c789a3e 100644
--- a/VoidCat/Controllers/UploadController.cs
+++ b/VoidCat/Controllers/UploadController.cs
@@ -27,11 +27,11 @@ namespace VoidCat.Controllers
             {
                 var meta = new VoidFileMeta()
                 {
-                    MimeType = Request.ContentType,
-                    Name = Request.Headers.GetHeader("X-Filename")
+                    MimeType = Request.Headers.GetHeader("V-Content-Type"),
+                    Name = Request.Headers.GetHeader("V-Filename")
                 };
 
-                var digest = Request.Headers.GetHeader("X-Digest");
+                var digest = Request.Headers.GetHeader("V-Digest");
                 var vf = await _storage.Ingress(new(Request.Body, meta, digest!), HttpContext.RequestAborted);
 
                 return UploadResult.Success(vf);
@@ -54,8 +54,8 @@ namespace VoidCat.Controllers
                 var fileInfo = await _storage.Get(gid);
                 if (fileInfo == default) return UploadResult.Error("File not found");
 
-                var editSecret = Request.Headers.GetHeader("X-EditSecret");
-                var digest = Request.Headers.GetHeader("X-Digest");
+                var editSecret = Request.Headers.GetHeader("V-EditSecret");
+                var digest = Request.Headers.GetHeader("V-Digest");
                 var vf = await _storage.Ingress(new(Request.Body, fileInfo.Metadata, digest!)
                 {
                     EditSecret = editSecret?.FromBase58Guid(),
diff --git a/VoidCat/spa/src/FileUpload.css b/VoidCat/spa/src/FileUpload.css
index ad2b1d8..645fe5a 100644
--- a/VoidCat/spa/src/FileUpload.css
+++ b/VoidCat/spa/src/FileUpload.css
@@ -29,7 +29,7 @@
 }
 
 .upload .iframe-challenge > div {
-    margin-left: 25vw;
-    width: 50vw;
+    margin-left: 10vw;
+    width: 80vw;
     height: 100vh;
 }
\ No newline at end of file
diff --git a/VoidCat/spa/src/FileUpload.js b/VoidCat/spa/src/FileUpload.js
index d17ab5b..7c236ee 100644
--- a/VoidCat/spa/src/FileUpload.js
+++ b/VoidCat/spa/src/FileUpload.js
@@ -64,8 +64,8 @@ export function FileUpload(props) {
             method: "POST",
             body: rs,
             headers: {
-                "Content-Type": props.file.type,
-                "X-Filename": props.file.name
+                "V-Content-Type": props.file.type,
+                "V-Filename": props.file.name
             }
         });
 
@@ -108,11 +108,11 @@ export function FileUpload(props) {
                 };
                 req.upload.onprogress = handleProgress;
                 req.open("POST", typeof (id) === "string" ? `/upload/${id}` : "/upload");
-                req.setRequestHeader("Content-Type", props.file.type);
-                req.setRequestHeader("X-Filename", props.file.name);
-                req.setRequestHeader("X-Digest", buf2hex(digest));
+                req.setRequestHeader("V-Content-Type", props.file.type);
+                req.setRequestHeader("V-Filename", props.file.name);
+                req.setRequestHeader("V-Digest", buf2hex(digest));
                 if (typeof (editSecret) === "string") {
-                    req.setRequestHeader("X-EditSecret", editSecret);
+                    req.setRequestHeader("V-EditSecret", editSecret);
                 }
                 req.send(segment);
             } catch (e) {