3 files changed, 24 insertions, 12 deletions
diff --git a/std/mime/multipart.ts b/std/mime/multipart.ts
index abe46f820..75d418c92 100644
--- a/std/mime/multipart.ts
+++ b/std/mime/multipart.ts
@@ -206,7 +206,7 @@ class PartReader implements Reader, Closer {
     const cd = this.headers.get("content-disposition");
     const params: { [key: string]: string } = {};
     assert(cd != null, "content-disposition must be set");
-    const comps = cd.split(";");
+    const comps = decodeURI(cd).split(";");
     this.contentDisposition = comps[0];
     comps
       .slice(1)
diff --git a/std/mime/multipart_test.ts b/std/mime/multipart_test.ts
index e12a2f399..61afdba03 100644
--- a/std/mime/multipart_test.ts
+++ b/std/mime/multipart_test.ts
@@ -188,6 +188,10 @@ test({
     const file = form.file("file");
     assert(isFormFile(file));
     assert(file.content !== void 0);
+    const file2 = form.file("file2");
+    assert(isFormFile(file2));
+    assert(file2.filename === "中文.json");
+    assert(file2.content !== void 0);
     o.close();
   },
 });
diff --git a/std/mime/testdata/sample.txt b/std/mime/testdata/sample.txt
index 97e9bf553..8c7a1c204 100644
--- a/std/mime/testdata/sample.txt
+++ b/std/mime/testdata/sample.txt
@@ -12,16 +12,24 @@ bar
 content-disposition: form-data; name="file"; filename="tsconfig.json"
 content-type: application/octet-stream
 
-{
-  "compilerOptions": {
-    "target": "es2018",
-    "baseUrl": ".",
-    "paths": {
-      "deno": ["./deno.d.ts"],
-      "https://*": ["../../.deno/deps/https/*"],
-      "http://*": ["../../.deno/deps/http/*"]
-    }
-  }
-}
+{
+  "compilerOptions": {
+    "target": "es2018",
+    "baseUrl": ".",
+    "paths": {
+      "deno": ["./deno.d.ts"],
+      "https://*": ["../../.deno/deps/https/*"],
+      "http://*": ["../../.deno/deps/http/*"]
+    }
+  }
+}
+
+----------------------------434049563556637648550474
+content-disposition: form-data; name="file2"; filename="中文.json"
+content-type: application/octet-stream
+
+{
+  "test": "filename"
+}
 
 ----------------------------434049563556637648550474--