diff --git a/src/main/java/tokyo/northside/oxfordapi/OxfordClient.java b/src/main/java/tokyo/northside/oxfordapi/OxfordClient.java
index 3b7ba36..5502f9f 100644
--- a/src/main/java/tokyo/northside/oxfordapi/OxfordClient.java
+++ b/src/main/java/tokyo/northside/oxfordapi/OxfordClient.java
@@ -24,9 +24,6 @@
  * @author Hiroshi Miura
  */
 public class OxfordClient extends OxfordClientBase {
-
-    private static final String BASE_URL = "https://od-api.oxforddictionaries.com/";
-    private final String endpointUrl;
     private final String appId;
     private final String appKey;
 
@@ -35,22 +32,10 @@ public class OxfordClient extends OxfordClientBase {
      *
      * @param appId AppId of the OD API credentials.
      * @param appKey AppKey of the OD API credentials.
-     * @param baseUrl base URL of the OD API v2.
      */
-    public OxfordClient(final String appId, final String appKey, final String baseUrl) {
+    public OxfordClient(final String appId, final String appKey) {
         this.appId = appId;
         this.appKey = appKey;
-        endpointUrl = baseUrl;
-    }
-
-    /**
-     * Construcotr with default v2 URL.
-     *
-     * @param appId AppId of the OD API credentials.
-     * @param appKey AppKey of the OD API credentials.
-     */
-    public OxfordClient(final String appId, final String appKey) {
-        this(appId, appKey, BASE_URL);
     }
 
     @Override
@@ -76,7 +61,7 @@ public Map<String, List<Result>> queryTranslations(final Collection<String> word
     public List<Result> queryTranslation(final String word, final String source, final String target)
             throws OxfordClientException {
         Set<String> fields = new HashSet<>(Arrays.asList("definitions", "pronunciations"));
-        RequestFactory f = new RequestFactory(appId, appKey, endpointUrl)
+        RequestFactory f = new RequestFactory(appId, appKey)
                 .setType(RequestFactory.QueryType.TRANSLATIONS)
                 .setSourceLanguage(source)
                 .setTargetLanguage(target)
@@ -107,7 +92,7 @@ public Map<String, List<Result>> queryEntries(final Collection<String> words, fi
     @Override
     public List<Result> queryEntry(final String word, final String language, final boolean strict)
             throws OxfordClientException {
-        RequestFactory f = new RequestFactory(appId, appKey, endpointUrl)
+        RequestFactory f = new RequestFactory(appId, appKey)
                 .setType(RequestFactory.QueryType.ENTRIES)
                 .setLanguage(language)
                 .setQueryWord(word)
diff --git a/src/main/java/tokyo/northside/oxfordapi/OxfordThreadClient.java b/src/main/java/tokyo/northside/oxfordapi/OxfordThreadClient.java
index a70f4c2..00bba81 100644
--- a/src/main/java/tokyo/northside/oxfordapi/OxfordThreadClient.java
+++ b/src/main/java/tokyo/northside/oxfordapi/OxfordThreadClient.java
@@ -23,7 +23,6 @@
  * @author Hiroshi Miura
  */
 public class OxfordThreadClient extends OxfordClientBase {
-    private static final String ENDPOINT_URL = "https://od-api.oxforddictionaries.com/api/v2/";
     private final String appId;
     private final String appKey;
 
@@ -42,7 +41,7 @@ public Map<String, List<Result>> queryEntries(final Collection<String> words, fi
                 .build()) {
             final List<RequestFactory> requests = new ArrayList<>();
             for (final String query : words) {
-                RequestFactory factory = new RequestFactory(appId, appKey, ENDPOINT_URL);
+                RequestFactory factory = new RequestFactory(appId, appKey);
                 factory.setQueryWord(query).setLanguage(language).setStrictMatch(strict);
                 requests.add(factory);
             }
@@ -63,7 +62,7 @@ public Map<String, List<Result>> queryTranslations(final Collection<String> word
                 .build()) {
             List<RequestFactory> requests = new ArrayList<>();
             for (final String query : words) {
-                RequestFactory factory = new RequestFactory(appId, appKey, ENDPOINT_URL);
+                RequestFactory factory = new RequestFactory(appId, appKey);
                 factory.setQueryWord(query).setSourceLanguage(source).setTargetLanguage(target);
                 requests.add(factory);
             }
diff --git a/src/main/java/tokyo/northside/oxfordapi/RequestFactory.java b/src/main/java/tokyo/northside/oxfordapi/RequestFactory.java
index ddf3cdc..73a1eb4 100644
--- a/src/main/java/tokyo/northside/oxfordapi/RequestFactory.java
+++ b/src/main/java/tokyo/northside/oxfordapi/RequestFactory.java
@@ -17,8 +17,8 @@ public enum QueryType {
         TRANSLATIONS,
     }
 
+    private static final String ENDPOINT_URL = "https://od-api.oxforddictionaries.com";
     private static final String BASE_PATH = "/api/v2/";
-    private final String endpointUrl;
     private final String appId;
     private final String appKey;
 
@@ -39,12 +39,7 @@ public enum QueryType {
      */
     private Set<String> fields;
 
-    public RequestFactory(final String appId, final String appKey, final String endpointHost) {
-        if (endpointHost.endsWith("/")) {
-            this.endpointUrl = endpointHost.substring(0, endpointHost.length() - 1);
-        } else {
-            this.endpointUrl = endpointHost;
-        }
+    public RequestFactory(final String appId, final String appKey) {
         this.appId = appId;
         this.appKey = appKey;
         strictMatch = "false";
@@ -159,7 +154,7 @@ public String getUrl() throws OxfordClientException {
         if (queryWord == null) {
             throw new OxfordClientException("Query word is mandatory");
         }
-        return String.format("%s%s?%s", endpointUrl, getPath(), getQueryString());
+        return String.format("%s%s?%s", ENDPOINT_URL, getPath(), getQueryString());
     }
 
     public String getQueryWord() {
diff --git a/src/test/groovy/tokyo/northside/oxfordapi/OxfordClientTest.groovy b/src/test/groovy/tokyo/northside/oxfordapi/OxfordClientTest.groovy
index f9b4926..ef669fb 100644
--- a/src/test/groovy/tokyo/northside/oxfordapi/OxfordClientTest.groovy
+++ b/src/test/groovy/tokyo/northside/oxfordapi/OxfordClientTest.groovy
@@ -6,13 +6,12 @@ import tokyo.northside.oxfordapi.dtd.Result
 import static org.junit.Assert.assertEquals
 
 class OxfordClientTest {
-    def ENDPOINT_URL = "https://od-api.oxforddictionaries.com/"
     def appId = System.properties.getProperty("oxfordId")
     def appKey = System.properties.getProperty("oxfordKey")
 
     @Test
     void simpleQueryTest() {
-        OxfordClient client = new OxfordClient(appId, appKey, ENDPOINT_URL)
+        OxfordClient client = new OxfordClient(appId, appKey)
         List<Result> result = client.queryEntry("ace", "en-GB", true)
         assertEquals(2, result.size())
         client.close()
@@ -20,7 +19,7 @@ class OxfordClientTest {
 
     @Test
     void queryResultTest() {
-        OxfordClient client = new OxfordClient(appId, appKey, ENDPOINT_URL)
+        OxfordClient client = new OxfordClient(appId, appKey)
         List<OxfordDictionaryEntry> result = client.getDefinitions(Collections.singletonList("ace"), "en-GB", true)
         assertEquals(5, result.size())
         client.close()