2 files changed, 3 insertions, 3 deletions
diff --git a/std/archive/tar.ts b/std/archive/tar.ts
index cafef8723..6bc2b92d0 100644
--- a/std/archive/tar.ts
+++ b/std/archive/tar.ts
@@ -470,7 +470,7 @@ export class Untar {
     while (rest > 0) {
       await this.reader.readFull(this.block);
       const arr = rest < recordSize ? this.block.subarray(0, rest) : this.block;
-      await Deno.copy(writer, new Deno.Buffer(arr));
+      await Deno.copy(new Deno.Buffer(arr), writer);
       rest -= recordSize;
     }
 
diff --git a/std/archive/tar_test.ts b/std/archive/tar_test.ts
index ae3ee8138..cd22addcc 100644
--- a/std/archive/tar_test.ts
+++ b/std/archive/tar_test.ts
@@ -30,8 +30,8 @@ Deno.test(async function createTarArchive(): Promise<void> {
   await tar.append("dir/tar.ts", { filePath });
 
   // write tar data to a buffer
-  const writer = new Deno.Buffer(),
-    wrote = await Deno.copy(writer, tar.getReader());
+  const writer = new Deno.Buffer();
+  const wrote = await Deno.copy(tar.getReader(), writer);
 
   /**
    * 3072 = 512 (header) + 512 (content) + 512 (header) + 512 (content)