diff --git a/httpclient5/src/main/java/org/apache/hc/client5/http/cookie/CookieIdentityComparator.java b/httpclient5/src/main/java/org/apache/hc/client5/http/cookie/CookieIdentityComparator.java
index 098788a15..2e007fdbf 100644
--- a/httpclient5/src/main/java/org/apache/hc/client5/http/cookie/CookieIdentityComparator.java
+++ b/httpclient5/src/main/java/org/apache/hc/client5/http/cookie/CookieIdentityComparator.java
@@ -55,14 +55,10 @@ public class CookieIdentityComparator implements Serializable, Comparator<Cookie
             String d1 = c1.getDomain();
             if (d1 == null) {
                 d1 = "";
-            } else if (d1.indexOf('.') == -1) {
-                d1 = d1 + ".local";
             }
             String d2 = c2.getDomain();
             if (d2 == null) {
                 d2 = "";
-            } else if (d2.indexOf('.') == -1) {
-                d2 = d2 + ".local";
             }
             res = d1.compareToIgnoreCase(d2);
         }
diff --git a/httpclient5/src/test/java/org/apache/hc/client5/http/impl/classic/TestCookieIdentityComparator.java b/httpclient5/src/test/java/org/apache/hc/client5/http/impl/classic/TestCookieIdentityComparator.java
index ceeff4f7f..8f627f8ce 100644
--- a/httpclient5/src/test/java/org/apache/hc/client5/http/impl/classic/TestCookieIdentityComparator.java
+++ b/httpclient5/src/test/java/org/apache/hc/client5/http/impl/classic/TestCookieIdentityComparator.java
@@ -80,22 +80,6 @@ public class TestCookieIdentityComparator {
         Assert.assertFalse(comparator.compare(c3, c4) == 0);
     }
 
-    @Test
-    public void testCookieIdentityComparasionByNameAndLocalHost() {
-        final CookieIdentityComparator comparator = new CookieIdentityComparator();
-        final BasicClientCookie c1 = new BasicClientCookie("name", "value1");
-        c1.setDomain("localhost");
-        final BasicClientCookie c2 = new BasicClientCookie("name", "value2");
-        c2.setDomain("localhost");
-        Assert.assertTrue(comparator.compare(c1, c2) == 0);
-
-        final BasicClientCookie c3 = new BasicClientCookie("name", "value1");
-        c3.setDomain("localhost.local");
-        final BasicClientCookie c4 = new BasicClientCookie("name", "value2");
-        c4.setDomain("localhost");
-        Assert.assertTrue(comparator.compare(c3, c4) == 0);
-    }
-
     @Test
     public void testCookieIdentityComparasionByNameDomainAndPath() {
         final CookieIdentityComparator comparator = new CookieIdentityComparator();