diff --git a/AnyReadable.zig b/AnyReadable.zig
index 888e16edc09cc1771d96ad7c736d1407510415da..ed0a26491d59d6863a249c76488ddaf43d75c780 100644
--- a/AnyReadable.zig
+++ b/AnyReadable.zig
@@ -3,12 +3,12 @@ const std = @import("std");
 const nio = @import("./nio.zig");
 const AnyReadable = @This();
 
-readFn: *const fn (*allowzero anyopaque, []u8) anyerror!usize,
+vtable: *const struct {
+},
 state: *allowzero anyopaque,
 
-pub fn read(r: *AnyReadable, buffer: []u8) !usize {
-    return r.readFn(r.state, buffer);
-}
-
 pub const ReadError = anyerror;
 pub usingnamespace nio.Readable(@This(), ._var);
+pub fn read(r: *AnyReadable, buffer: []u8) !usize {
+    return r.vtable.read(r.state, buffer);
+}
diff --git a/fixed_buffer_stream.zig b/fixed_buffer_stream.zig
index 6216762979a0e1e33d9bb832ac0b1eec05475909..56766ba29e27931bffac0c123cf793d524a21d73 100644
--- a/fixed_buffer_stream.zig
+++ b/fixed_buffer_stream.zig
@@ -29,13 +29,15 @@ pub fn FixedBufferStream(comptime Buffer: type) type {
 
         pub fn anyReadable(self: *Self) nio.AnyReadable {
             const S = struct {
-                fn foo(s: *allowzero anyopaque, buffer: []u8) anyerror!usize {
+                fn read(s: *allowzero anyopaque, buffer: []u8) anyerror!usize {
                     const fbs: *Self = @ptrCast(@alignCast(s));
                     return fbs.read(buffer);
                 }
             };
             return .{
-                .readFn = S.foo,
+                .vtable = &.{
+                    .read = S.read,
+                },
                 .state = @ptrCast(self),
             };
         }