diff --git a/tests/Client/RequestTest.php b/tests/Client/RequestTest.php
index 32430a2..1d6accd 100644
--- a/tests/Client/RequestTest.php
+++ b/tests/Client/RequestTest.php
@@ -18,22 +18,22 @@
     $jar = CookieJar::fromArray(['Foo' => 'Bar', 'identity' => 'xyz'], 'local.example');
     $curl    = $this->curlFormatter->format($request, ['cookies' => $jar]);
 
-    expect($curl)->not()->toContain("-H 'Host: local.example'");
-    expect($curl)->toContain("-b 'Foo=Bar; identity=xyz'");
+    expect(str_replace('"', '\'', $curl))->not()->toContain("-H 'Host: local.example'");
+    expect(str_replace('"', '\'', $curl))->toContain("-b 'Foo=Bar; identity=xyz'");
 });
 
 test('POST', function () {
     $request = new Request('POST', 'http://local.example', [], Utils::streamFor('foo=bar&hello=world'));
     $curl    = $this->curlFormatter->format($request);
 
-    expect($curl)->toContain("-d 'foo=bar&hello=world'");
+    expect(str_replace('"', '\'', $curl))->toContain("-d 'foo=bar&hello=world'");
 });
 
 test('PUT', function () {
     $request = new Request('PUT', 'http://local.example', [], Utils::streamFor('foo=bar&hello=world'));
     $curl    = $this->curlFormatter->format($request);
 
-    expect($curl)->toContain("-d 'foo=bar&hello=world'");
+    expect(str_replace('"', '\'', $curl))->toContain("-d 'foo=bar&hello=world'");
     expect($curl)->toContain('-X PUT');
 });
 
@@ -48,7 +48,7 @@
     $request = new Request('HEAD', 'http://local.example');
     $curl    = $this->curlFormatter->format($request);
 
-    expect($curl)->toContain("curl 'http://local.example' --head");
+    expect(str_replace('"', '\'', $curl))->toContain("curl 'http://local.example' --head");
 });
 
 test('OPTIONS', function () {
@@ -56,4 +56,4 @@
     $curl    = $this->curlFormatter->format($request);
 
     expect($curl)->toContain('-X OPTIONS');
-});
\ No newline at end of file
+});
diff --git a/tests/Formatter/CurlFormatterTest.php b/tests/Formatter/CurlFormatterTest.php
index bc952b5..ee5dfd4 100644
--- a/tests/Formatter/CurlFormatterTest.php
+++ b/tests/Formatter/CurlFormatterTest.php
@@ -21,47 +21,47 @@
     $request = new Request('GET', 'http://example.local');
     $curl    = $this->curlFormatter->format($request);
 
-    $this->assertEquals("curl 'http://example.local'", $curl);
+    $this->assertEquals("curl 'http://example.local'", str_replace('"', '\'', $curl));
 });
 
 test('simple get', function () {
     $request = new Request('GET', 'http://example.local');
     $curl    = $this->curlFormatter->format($request);
 
-    $this->assertEquals("curl 'http://example.local'", $curl);
+    $this->assertEquals("curl 'http://example.local'", str_replace('"', '\'', $curl));
 });
 
 test('simple GET with header', function () {
     $request = new Request('GET', 'http://example.local', ['foo' => 'bar']);
     $curl    = $this->curlFormatter->format($request);
 
-    $this->assertEquals("curl 'http://example.local' -H 'foo: bar'", $curl);
+    $this->assertEquals("curl 'http://example.local' -H 'foo: bar'", str_replace('"', '\'', $curl));
 });
 
 test('simple GET with multiple header', function () {
     $request = new Request('GET', 'http://example.local', ['foo' => 'bar', 'Accept-Encoding' => 'gzip,deflate,sdch']);
     $curl    = $this->curlFormatter->format($request);
 
-    $this->assertEquals("curl 'http://example.local' -H 'foo: bar' -H 'Accept-Encoding: gzip,deflate,sdch'", $curl);
+    $this->assertEquals("curl 'http://example.local' -H 'foo: bar' -H 'Accept-Encoding: gzip,deflate,sdch'", str_replace('"', '\'', $curl));
 });
 
 test('GET With Query String', function () {
     $request = new Request('GET', 'http://example.local?foo=bar');
     $curl    = $this->curlFormatter->format($request);
 
-    $this->assertEquals("curl 'http://example.local?foo=bar'", $curl);
+    $this->assertEquals("curl 'http://example.local?foo=bar'", str_replace('"', '\'', $curl));
 
     $request = new Request('GET', 'http://example.local?foo=bar');
     $curl = $this->curlFormatter->format($request);
 
-    $this->assertEquals("curl 'http://example.local?foo=bar'", $curl);
+    $this->assertEquals("curl 'http://example.local?foo=bar'", str_replace('"', '\'', $curl));
 
     $body = Utils::streamFor(http_build_query(['foo' => 'bar', 'hello' => 'world'], '', '&'));
 
     $request = new Request('GET', 'http://example.local',[],$body);
     $curl    = $this->curlFormatter->format($request);
 
-    $this->assertEquals("curl 'http://example.local' -G  -d 'foo=bar&hello=world'",$curl);
+    $this->assertEquals("curl 'http://example.local' -G  -d 'foo=bar&hello=world'", str_replace('"', '\'', $curl));
 });
 
 test('POST', function () {
@@ -71,7 +71,8 @@
     $curl    = $this->curlFormatter->format($request);
 
     expect($curl)->not()->toContain(" -G ");
-    expect($curl)->toContain("-d 'foo=bar&hello=world'");
+    expect(str_replace('"', '\'', $curl))->toContain("-d 'foo=bar&hello=world'");
+
 });
 
 test('large POST request', function () {
@@ -110,7 +111,7 @@
     $request = new Request('PUT', 'http://example.local', [], Utils::streamFor('foo=bar&hello=world'));
     $curl    = $this->curlFormatter->format($request);
 
-    expect($curl)->toContain("-d 'foo=bar&hello=world'");
+    expect(str_replace('"', '\'', $curl))->toContain("-d 'foo=bar&hello=world'");
     expect($curl)->toContain("-X PUT");
 });
 
@@ -118,7 +119,7 @@
     $request = new Request('PUT', 'http://example.local', [], Utils::streamFor('foo=bar&hello=world'));
     $curl    = $this->curlFormatter->format($request);
 
-    expect($curl)->toContain("-d 'foo=bar&hello=world'");
+    expect(str_replace('"', '\'', $curl))->toContain("-d 'foo=bar&hello=world'");
     expect($curl)->toContain("-X PUT");
 });