diff --git a/src/browser/HttpClient.zig b/src/browser/HttpClient.zig
index b64c55f89..06e2b22aa 100644
--- a/src/browser/HttpClient.zig
+++ b/src/browser/HttpClient.zig
@@ -2098,12 +2098,7 @@ pub const Transfer = struct {
         return result;
     }
 
-    fn dataCallback(
-        buffer: [*]const u8,
-        chunk_count: usize,
-        chunk_len: usize,
-        data: *anyopaque,
-    ) callconv(.c) usize {
+    fn dataCallback(buffer: [*]const u8, chunk_count: usize, chunk_len: usize, data: *anyopaque) callconv(.c) usize {
         // libcurl should only ever emit 1 chunk at a time
         if (comptime IS_DEBUG) {
             std.debug.assert(chunk_count == 1);
diff --git a/src/browser/webapi/net/WebSocket.zig b/src/browser/webapi/net/WebSocket.zig
index dd33d99a8..c94ae9235 100644
--- a/src/browser/webapi/net/WebSocket.zig
+++ b/src/browser/webapi/net/WebSocket.zig
@@ -545,16 +545,11 @@ fn dispatchCloseEvent(self: *WebSocket, code: u16, reason: []const u8, was_clean
     }
 }
 
-fn sendDataCallback(
-    buffer: [*c]u8,
-    buf_count: usize,
-    buf_len: usize,
-    raw_connection: ?*anyopaque,
-) callconv(.c) usize {
+fn sendDataCallback(buffer: [*]u8, buf_count: usize, buf_len: usize, data: *anyopaque) callconv(.c) usize {
     if (comptime IS_DEBUG) {
         std.debug.assert(buf_count == 1);
     }
-    const conn: *http.Connection = @ptrCast(@alignCast(raw_connection));
+    const conn: *http.Connection = @ptrCast(@alignCast(data));
     return _sendDataCallback(conn, buffer[0..buf_len]) catch |err| {
         log.warn(.websocket, "send callback", .{ .err = err });
         return http.readfunc_pause;
@@ -629,12 +624,7 @@ fn writeContent(self: *WebSocket, conn: *http.Connection, buf: []u8, byte_msg: M
     return to_copy;
 }
 
-fn receivedDataCallback(
-    buffer: [*]const u8,
-    buf_count: usize,
-    buf_len: usize,
-    data: *anyopaque,
-) callconv(.c) usize {
+fn receivedDataCallback(buffer: [*]const u8, buf_count: usize, buf_len: usize, data: *anyopaque) callconv(.c) usize {
     if (comptime IS_DEBUG) {
         std.debug.assert(buf_count == 1);
     }
@@ -705,12 +695,7 @@ fn _receivedDataCallback(conn: *http.Connection, data: []const u8) !void {
 
 // libcurl has no mechanism to signal that the connection is established. The
 // best option I could come up with was looking for an upgrade header response.
-fn receivedHeaderCallback(
-    buffer: [*]const u8,
-    header_count: usize,
-    buf_len: usize,
-    data: *anyopaque,
-) callconv(.c) usize {
+fn receivedHeaderCallback(buffer: [*]const u8, header_count: usize, buf_len: usize, data: *anyopaque) callconv(.c) usize {
     if (comptime IS_DEBUG) {
         std.debug.assert(header_count == 1);
     }