diff --git a/mozjs-sys/Cargo.toml b/mozjs-sys/Cargo.toml
index 99eb8538330..5587fdb84c6 100644
--- a/mozjs-sys/Cargo.toml
+++ b/mozjs-sys/Cargo.toml
@@ -2,7 +2,7 @@
 name = "mozjs_sys"
 description = "System crate for the Mozilla SpiderMonkey JavaScript engine."
 repository.workspace = true
-version = "0.128.3-3"
+version = "0.128.3-4"
 authors = ["Mozilla"]
 links = "mozjs"
 build = "build.rs"
diff --git a/mozjs-sys/build.rs b/mozjs-sys/build.rs
index f45db78240f..10f14f30733 100644
--- a/mozjs-sys/build.rs
+++ b/mozjs-sys/build.rs
@@ -704,7 +704,8 @@ mod jsglue {
 
         let confdefs_path: PathBuf = outdir.join("js/src/js-confdefs.h");
         let msvc = if build.get_compiler().is_like_msvc() {
-            build.flag(&format!("-FI{}", confdefs_path.to_string_lossy()));
+            build.flag("-FI");
+            build.flag(&confdefs_path);
             build.define("WIN32", "");
             build.flag("-Zi");
             build.flag("-GR-");
@@ -733,19 +734,13 @@ mod jsglue {
             .clang_args(["-I", &include_path.to_string_lossy()])
             .enable_cxx_namespaces()
             .allowlist_file("./src/jsglue.cpp")
-            .allowlist_recursively(false);
+            .allowlist_recursively(false)
+            .clang_args(["-include", &confdefs_path.to_str().expect("UTF-8")]);
 
         if msvc {
-            builder = builder.clang_args([
-                "-fms-compatibility",
-                &format!("-FI{}", confdefs_path.to_string_lossy()),
-                "-DWIN32",
-                "-std=c++17",
-            ])
+            builder = builder.clang_args(["-fms-compatibility", "-DWIN32", "-std=c++17"])
         } else {
-            builder = builder
-                .clang_args(["-fPIC", "-fno-rtti", "-std=c++17"])
-                .clang_args(["-include", &confdefs_path.to_str().expect("UTF-8")])
+            builder = builder.clang_args(["-fPIC", "-fno-rtti", "-std=c++17"])
         }
 
         for ty in BLACKLIST_TYPES {
diff --git a/mozjs-sys/tests/streams_available.rs b/mozjs-sys/tests/streams_available.rs
new file mode 100644
index 00000000000..d0f11fcdb27
--- /dev/null
+++ b/mozjs-sys/tests/streams_available.rs
@@ -0,0 +1,22 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#![cfg(feature = "streams")]
+
+use mozjs_sys::glue::ReadableStreamUnderlyingSourceTraps;
+
+static UNDERLYING_SOURCE_TRAPS: ReadableStreamUnderlyingSourceTraps =
+    ReadableStreamUnderlyingSourceTraps {
+        requestData: None,
+        writeIntoReadRequestBuffer: None,
+        cancel: None,
+        onClosed: None,
+        onErrored: None,
+        finalize: None,
+    };
+
+#[test]
+fn test_ok() {
+    assert!(UNDERLYING_SOURCE_TRAPS.requestData.is_none());
+}