diff --git a/lib/defaults.js b/lib/defaults.js
index 2b2a1a7..2a9d563 100644
--- a/lib/defaults.js
+++ b/lib/defaults.js
@@ -41,7 +41,7 @@ var defaults = {
       return data;
     }
     if (utils.isArrayBufferView(data)) {
-      return data.buffer;
+      return data.slice().buffer;
     }
     if (utils.isURLSearchParams(data)) {
       setContentTypeIfUnset(headers, 'application/x-www-form-urlencoded;charset=utf-8');
diff --git a/test/specs/defaults.spec.js b/test/specs/defaults.spec.js
index c8ee72e..92fb6d8 100644
--- a/test/specs/defaults.spec.js
+++ b/test/specs/defaults.spec.js
@@ -24,6 +24,12 @@ describe('defaults', function () {
     expect(defaults.transformRequest[0]('foo=bar')).toEqual('foo=bar');
   });
 
+  it('should transform TypedArrays without including buffer pool', function () {
+    if (typeof Uint8Array === 'undefined') return this.skip();
+    const buffered = new Uint8Array(256).subarray(10, 26);
+    expect(defaults.transformRequest[0](buffered).byteLength).toEqual(16);
+  });
+
   it('should transform response json', function () {
     var data = defaults.transformResponse[0]('{"foo":"bar"}');