diff --git a/adapters/oidc/js/src/main/resources/keycloak.d.ts b/adapters/oidc/js/src/main/resources/keycloak.d.ts
index fd306c7dd0..b97e301fdd 100644
--- a/adapters/oidc/js/src/main/resources/keycloak.d.ts
+++ b/adapters/oidc/js/src/main/resources/keycloak.d.ts
@@ -182,7 +182,8 @@ declare namespace Keycloak {
 
 	interface KeycloakLoginOptions {
 		/**
-		 * @private Undocumented.
+		 * Specifies the scope parameter for the login url
+		 * The scope 'openid' will be added to the scope if it is missing or undefined.
 		 */
 		scope?: string;
 
diff --git a/adapters/oidc/js/src/main/resources/keycloak.js b/adapters/oidc/js/src/main/resources/keycloak.js
index 7f69f420bc..189741ac3d 100755
--- a/adapters/oidc/js/src/main/resources/keycloak.js
+++ b/adapters/oidc/js/src/main/resources/keycloak.js
@@ -191,6 +191,10 @@
                 } else {
                     kc.enableLogging = false;
                 }
+
+                if (typeof initOptions.scope === "string") {
+                    kc.scope = initOptions.scope;
+                }
             }
 
             if (!kc.responseMode) {
@@ -433,15 +437,13 @@
                 baseUrl = kc.endpoints.authorize();
             }
 
-            var scope;
-            if (options && options.scope) {
-                if (options.scope.indexOf("openid") != -1) {
-                    scope = options.scope;
-                } else {
-                    scope = "openid " + options.scope;
-                }
-            } else {
+            var scope = options && options.scope || kc.scope;
+            if (!scope) {
+                // if scope is not set, default to "openid"
                 scope = "openid";
+            } else if (scope.indexOf("openid") === -1) {
+                // if openid scope is missing, prefix the given scopes with it
+                scope = "openid " + scope;
             }
 
             var url = baseUrl
diff --git a/testsuite/integration-arquillian/tests/base/src/main/java/org/keycloak/testsuite/util/javascript/JavascriptTestExecutor.java b/testsuite/integration-arquillian/tests/base/src/main/java/org/keycloak/testsuite/util/javascript/JavascriptTestExecutor.java
index ce0bf8dc06..40c05cd596 100644
--- a/testsuite/integration-arquillian/tests/base/src/main/java/org/keycloak/testsuite/util/javascript/JavascriptTestExecutor.java
+++ b/testsuite/integration-arquillian/tests/base/src/main/java/org/keycloak/testsuite/util/javascript/JavascriptTestExecutor.java
@@ -42,11 +42,11 @@ public class JavascriptTestExecutor {
     }
 
     public JavascriptTestExecutor login() {
-        return login(null, null);
+        return login((String)null, null);
     }
     
     public JavascriptTestExecutor login(JavascriptStateValidator validator) {
-        return login(null, validator);
+        return login((String)null, validator);
     }
 
     /**
@@ -81,6 +81,10 @@ public class JavascriptTestExecutor {
         return this;
     }
     
+    public JavascriptTestExecutor login(JSObjectBuilder optionsBuilder, JavascriptStateValidator validator) {
+        return login(optionsBuilder.build(), validator);
+    }
+
     public JavascriptTestExecutor login(String options, JavascriptStateValidator validator) {
         if (options == null)
             jsExecutor.executeScript("keycloak.login()");
diff --git a/testsuite/integration-arquillian/tests/base/src/test/java/org/keycloak/testsuite/javascript/JavascriptAdapterTest.java b/testsuite/integration-arquillian/tests/base/src/test/java/org/keycloak/testsuite/javascript/JavascriptAdapterTest.java
index 12c8428b42..ebd4199c78 100644
--- a/testsuite/integration-arquillian/tests/base/src/test/java/org/keycloak/testsuite/javascript/JavascriptAdapterTest.java
+++ b/testsuite/integration-arquillian/tests/base/src/test/java/org/keycloak/testsuite/javascript/JavascriptAdapterTest.java
@@ -30,6 +30,7 @@ import org.keycloak.testsuite.util.OAuthClient;
 import org.keycloak.testsuite.util.RealmBuilder;
 import org.keycloak.testsuite.util.UserBuilder;
 import org.keycloak.testsuite.util.javascript.JSObjectBuilder;
+import org.keycloak.testsuite.util.javascript.JavascriptStateValidator;
 import org.keycloak.testsuite.util.javascript.JavascriptTestExecutor;
 import org.keycloak.testsuite.util.javascript.XMLHttpRequest;
 import org.openqa.selenium.TimeoutException;
@@ -450,6 +451,53 @@ public class JavascriptAdapterTest extends AbstractJavascriptTest {
                 .init(defaultArguments(), this::assertInitAuth);
     }
 
+    /**
+     * Test for scope handling via {@code initOptions}: <pre>{@code
+     * Keycloak keycloak = new Keycloak(); keycloak.init({.... scope: "profile email phone"})
+     * }</pre>
+     * See KEYCLOAK-14412
+     */
+    @Test
+    public void testScopeInInitOptionsShouldBeConsideredByLoginUrl() {
+
+        JSObjectBuilder initOptions = defaultArguments()
+                .loginRequiredOnLoad()
+                // phone is optional client scope
+                .add("scope", "profile email phone");
+
+        try {
+            testExecutor.init(initOptions);
+            // This throws exception because when JavascriptExecutor waits for AsyncScript to finish
+            // it is redirected to login page and executor gets no response
+
+            throw new RuntimeException("Probably the login-required OnLoad mode doesn't work, because testExecutor should fail with error that page was redirected.");
+        } catch (WebDriverException ex) {
+            // should happen
+        }
+
+        testExecutor.loginForm(testUser, this::assertOnTestAppUrl)
+                    .init(initOptions, this::assertSuccessfullyLoggedIn)
+                    .executeScript("return window.keycloak.tokenParsed.scope", assertOutputContains("phone"));
+    }
+
+    /**
+     * Test for scope handling via {@code loginOptions}: <pre>{@code
+     * Keycloak keycloak = new Keycloak(); keycloak.login({.... scope: "profile email phone"})
+     * }</pre>
+     * See KEYCLOAK-14412
+     */
+    @Test
+    public void testScopeInLoginOptionsShouldBeConsideredByLoginUrl() {
+
+        testExecutor.configure().init(defaultArguments());
+
+        JSObjectBuilder loginOptions = JSObjectBuilder.create().add("scope", "profile email phone");
+
+        testExecutor.login(loginOptions, (JavascriptStateValidator) (driver, output, events) -> {
+            assertThat(driver.getCurrentUrl(), containsString("&scope=openid%20profile%20email%20phone"));
+        });
+    }
+
     @Test
     public void testUpdateToken() {
         XMLHttpRequest request = XMLHttpRequest.create()