diff --git a/lib/std/http/Client.zig b/lib/std/http/Client.zig
index b8a4d7ee91..ed11a48e26 100644
--- a/lib/std/http/Client.zig
+++ b/lib/std/http/Client.zig
@@ -1666,7 +1666,7 @@ pub fn open(
 }
 
 pub const FetchOptions = struct {
-    server_header_buffer: ?[]u8 = null,
+    server_header_buffer: []u8,
     redirect_behavior: ?Request.RedirectBehavior = null,
 
     /// If the server sends a body, it will be appended to this ArrayList.
@@ -1712,13 +1712,11 @@ pub fn fetch(client: *Client, options: FetchOptions) !Response {
         .url => |u| try Uri.parse(u),
         .uri => |u| u,
     };
-    var server_header_buffer: [16 * 1024]u8 = undefined;
-
     const method: http.Method = options.method orelse
         if (options.payload != null) .POST else .GET;
 
     var req = try open(client, method, uri, .{
-        .server_header_buffer = options.server_header_buffer orelse &server_header_buffer,
+        .server_header_buffer = options.server_header_buffer,
         .redirect_behavior = options.redirect_behavior orelse
             if (options.payload == null) @enumFromInt(3) else .unhandled,
         .headers = options.headers,