diff --git a/src/bun.js/webcore/Blob.zig b/src/bun.js/webcore/Blob.zig
index ffaa35af51..90d6b452ea 100644
--- a/src/bun.js/webcore/Blob.zig
+++ b/src/bun.js/webcore/Blob.zig
@@ -1980,14 +1980,13 @@ pub fn getStream(
         return cached;
     }
     var recommended_chunk_size: SizeType = 0;
-    var arguments_ = callframe.arguments_old(2);
-    var arguments = arguments_.ptr[0..arguments_.len];
-    if (arguments.len > 0) {
-        if (!arguments[0].isNumber() and !arguments[0].isUndefinedOrNull()) {
+    const recommended_chunk_size_value = callframe.argument(0);
+    if (!recommended_chunk_size_value.isUndefinedOrNull()) {
+        if (!recommended_chunk_size_value.isNumber()) {
             return globalThis.throwInvalidArguments("chunkSize must be a number", .{});
         }
 
-        recommended_chunk_size = @as(SizeType, @intCast(@max(0, @as(i52, @truncate(arguments[0].toInt64())))));
+        recommended_chunk_size = @intCast(@max(0, @as(i52, @truncate(recommended_chunk_size_value.toInt64()))));
     }
     const stream = try jsc.WebCore.ReadableStream.fromBlobCopyRef(
         globalThis,
diff --git a/test/internal/ban-limits.json b/test/internal/ban-limits.json
index 699a509b0d..82ae899b8b 100644
--- a/test/internal/ban-limits.json
+++ b/test/internal/ban-limits.json
@@ -4,7 +4,7 @@
   " catch bun.outOfMemory()": 0,
   "!= alloc.ptr": 0,
   "!= allocator.ptr": 0,
-  ".arguments_old(": 265,
+  ".arguments_old(": 264,
   ".jsBoolean(false)": 0,
   ".jsBoolean(true)": 0,
   ".stdDir()": 42,
diff --git a/test/js/web/streams/streams.test.js b/test/js/web/streams/streams.test.js
index 2d03f58f87..d1c5bd8b9c 100644
--- a/test/js/web/streams/streams.test.js
+++ b/test/js/web/streams/streams.test.js
@@ -1059,6 +1059,14 @@ it("new Response(stream).blob() (direct)", async () => {
   expect(await blob.text()).toBe('{"hello":true}');
 });
 
+it("Blob.stream(undefined) does not crash", () => {
+  var blob = new Blob(["abdefgh"]);
+  var stream = blob.stream(undefined);
+  expect(stream instanceof ReadableStream).toBeTrue();
+  stream = blob.stream(null);
+  expect(stream instanceof ReadableStream).toBeTrue();
+});
+
 it("Blob.stream() -> new Response(stream).text()", async () => {
   var blob = new Blob(["abdefgh"]);
   var stream = blob.stream();