diff --git a/res/xml/security_settings_unification.xml b/res/xml/security_settings_unification.xml
index 43b8b09..b9c59e5 100644
--- a/res/xml/security_settings_unification.xml
+++ b/res/xml/security_settings_unification.xml
@@ -18,7 +18,7 @@
                   xmlns:settings="http://schemas.android.com/apk/res-auto"
                   android:title="@string/security_settings_title">
 
-    <SwitchPreference
+    <com.android.settingslib.RestrictedSwitchPreference
         android:key="unification"
         android:title="@string/lock_settings_profile_unification_title"
         android:summary="@string/lock_settings_profile_unification_summary"
diff --git a/src/com/android/settings/security/SecuritySettings.java b/src/com/android/settings/security/SecuritySettings.java
index 31f1ec6..fc47b5c 100644
--- a/src/com/android/settings/security/SecuritySettings.java
+++ b/src/com/android/settings/security/SecuritySettings.java
@@ -73,6 +73,7 @@
 import com.android.settings.widget.GearPreference;
 import com.android.settingslib.RestrictedLockUtils;
 import com.android.settingslib.RestrictedPreference;
+import com.android.settingslib.RestrictedSwitchPreference;
 import com.android.settingslib.drawer.CategoryKey;
 
 import java.util.ArrayList;
@@ -144,7 +145,7 @@
     private ManagedLockPasswordProvider mManagedPasswordProvider;
 
     private SwitchPreference mVisiblePatternProfile;
-    private SwitchPreference mUnifyProfile;
+    private RestrictedSwitchPreference mUnifyProfile;
 
     private SwitchPreference mShowPassword;
 
@@ -319,7 +320,7 @@
 
         mVisiblePatternProfile =
                 (SwitchPreference) root.findPreference(KEY_VISIBLE_PATTERN_PROFILE);
-        mUnifyProfile = (SwitchPreference) root.findPreference(KEY_UNIFICATION);
+        mUnifyProfile = (RestrictedSwitchPreference) root.findPreference(KEY_UNIFICATION);
 
         // Append the rest of the settings
         addPreferencesFromResource(R.xml.security_settings_misc);
@@ -560,10 +561,17 @@
         mLocationcontroller.updateSummary();
     }
 
-    private void updateUnificationPreference() {
+    @VisibleForTesting
+    void updateUnificationPreference() {
         if (mUnifyProfile != null) {
-            mUnifyProfile.setChecked(!mLockPatternUtils.isSeparateProfileChallengeEnabled(
-                    mProfileChallengeUserId));
+            final boolean separate =
+                    mLockPatternUtils.isSeparateProfileChallengeEnabled(mProfileChallengeUserId);
+            mUnifyProfile.setChecked(!separate);
+            if (separate) {
+                mUnifyProfile.setDisabledByAdmin(RestrictedLockUtils.checkIfRestrictionEnforced(
+                        getContext(), UserManager.DISALLOW_UNIFIED_PASSWORD,
+                        mProfileChallengeUserId));
+            }
         }
     }
 
@@ -930,14 +938,11 @@
                     .setPositiveButton(
                             compliant ? R.string.lock_settings_profile_unification_dialog_confirm
                             : R.string.lock_settings_profile_unification_dialog_uncompliant_confirm,
-                            new DialogInterface.OnClickListener() {
-                                @Override
-                                public void onClick(DialogInterface dialog, int whichButton) {
-                                    if (compliant) {
-                                        parentFragment.launchConfirmDeviceLockForUnification();
-                                    }    else {
-                                        parentFragment.unifyUncompliantLocks();
-                                    }
+                            (dialog, whichButton) -> {
+                                if (compliant) {
+                                    parentFragment.launchConfirmDeviceLockForUnification();
+                                }    else {
+                                    parentFragment.unifyUncompliantLocks();
                                 }
                             }
                     )
diff --git a/tests/robotests/src/com/android/settings/security/SecuritySettingsTest.java b/tests/robotests/src/com/android/settings/security/SecuritySettingsTest.java
index 1ecdd0f..231cce9 100644
--- a/tests/robotests/src/com/android/settings/security/SecuritySettingsTest.java
+++ b/tests/robotests/src/com/android/settings/security/SecuritySettingsTest.java
@@ -17,9 +17,11 @@
 package com.android.settings.security;
 
 import static com.google.common.truth.Truth.assertThat;
+
 import static org.mockito.Matchers.anyInt;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.reset;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.verifyNoMoreInteractions;
@@ -29,7 +31,9 @@
 import android.content.Context;
 import android.content.pm.PackageManager;
 import android.hardware.fingerprint.FingerprintManager;
+import android.os.UserHandle;
 import android.os.UserManager;
+import android.os.UserManager.EnforcingUser;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceGroup;
 import android.support.v7.preference.PreferenceScreen;
@@ -43,6 +47,9 @@
 import com.android.settings.testutils.SettingsRobolectricTestRunner;
 import com.android.settings.testutils.XmlTestUtils;
 import com.android.settings.testutils.shadow.ShadowLockPatternUtils;
+import com.android.settings.testutils.shadow.ShadowUserManager;
+import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
+import com.android.settingslib.RestrictedSwitchPreference;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -55,12 +62,15 @@
 import org.robolectric.shadows.ShadowApplication;
 import org.robolectric.util.ReflectionHelpers;
 
+import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 
 @RunWith(SettingsRobolectricTestRunner.class)
 @Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION,
         shadows = {
-                ShadowLockPatternUtils.class
+                ShadowLockPatternUtils.class,
+                ShadowUserManager.class,
         })
 public class SecuritySettingsTest {
 
@@ -187,4 +197,49 @@
 
         assertThat(keys).containsAllIn(niks);
     }
+
+    @Test
+    public void testUnifyLockRestriction() {
+        // Set up instance under test.
+        final Context context = spy(RuntimeEnvironment.application);
+        final SecuritySettings securitySettings = spy(new SecuritySettings());
+        when(securitySettings.getContext()).thenReturn(context);
+
+        final int userId = 123;
+        ReflectionHelpers.setField(securitySettings, "mProfileChallengeUserId", userId);
+
+        final LockPatternUtils utils = mock(LockPatternUtils.class);
+        when(utils.isSeparateProfileChallengeEnabled(userId)).thenReturn(true);
+        ReflectionHelpers.setField(securitySettings, "mLockPatternUtils", utils);
+
+        final RestrictedSwitchPreference unifyProfile = mock(RestrictedSwitchPreference.class);
+        ReflectionHelpers.setField(securitySettings, "mUnifyProfile", unifyProfile);
+
+        // Pretend that no admins enforce the restriction.
+        ShadowUserManager.getShadow().setUserRestrictionSources(
+                UserManager.DISALLOW_UNIFIED_PASSWORD,
+                UserHandle.of(userId),
+                Collections.emptyList());
+
+        securitySettings.updateUnificationPreference();
+
+        verify(unifyProfile).setDisabledByAdmin(null);
+
+        reset(unifyProfile);
+
+        // Pretend that the restriction is enforced by several admins. Having just one would
+        // require more mocking of implementation details.
+        final EnforcingUser enforcer1 = new EnforcingUser(
+                userId, UserManager.RESTRICTION_SOURCE_PROFILE_OWNER);
+        final EnforcingUser enforcer2 = new EnforcingUser(
+                UserHandle.USER_SYSTEM, UserManager.RESTRICTION_SOURCE_DEVICE_OWNER);
+        ShadowUserManager.getShadow().setUserRestrictionSources(
+                UserManager.DISALLOW_UNIFIED_PASSWORD,
+                UserHandle.of(userId),
+                Arrays.asList(enforcer1, enforcer2));
+
+        securitySettings.updateUnificationPreference();
+
+        verify(unifyProfile).setDisabledByAdmin(EnforcedAdmin.MULTIPLE_ENFORCED_ADMIN);
+    }
 }
diff --git a/tests/robotests/src/com/android/settings/testutils/shadow/ShadowUserManager.java b/tests/robotests/src/com/android/settings/testutils/shadow/ShadowUserManager.java
index f24837d..2df2b04 100644
--- a/tests/robotests/src/com/android/settings/testutils/shadow/ShadowUserManager.java
+++ b/tests/robotests/src/com/android/settings/testutils/shadow/ShadowUserManager.java
@@ -21,6 +21,7 @@
 import android.content.pm.UserInfo;
 import android.os.UserHandle;
 import android.os.UserManager;
+import android.os.UserManager.EnforcingUser;
 import android.util.SparseArray;
 
 import org.robolectric.RuntimeEnvironment;
@@ -31,14 +32,18 @@
 
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 
 @Implements(UserManager.class)
 public class ShadowUserManager extends org.robolectric.shadows.ShadowUserManager {
 
     private SparseArray<UserInfo> mUserInfos = new SparseArray<>();
     private boolean mAdminUser;
-    private List<String> mRestrictions = new ArrayList<>();
+    private final List<String> mRestrictions = new ArrayList<>();
+    private final Map<String, List<EnforcingUser>> mRestrictionSources = new HashMap<>();
+
 
     public void setIsAdminUser(boolean isAdminUser) {
         mAdminUser = isAdminUser;
@@ -91,4 +96,15 @@
         return (ShadowUserManager) Shadow.extract(
                 RuntimeEnvironment.application.getSystemService(UserManager.class));
     }
+
+    @Implementation
+    public List<EnforcingUser> getUserRestrictionSources(
+            String restrictionKey, UserHandle userHandle) {
+        return mRestrictionSources.get(restrictionKey + userHandle.getIdentifier());
+    }
+
+    public void setUserRestrictionSources(
+            String restrictionKey, UserHandle userHandle, List<EnforcingUser> enforcers) {
+        mRestrictionSources.put(restrictionKey + userHandle.getIdentifier(), enforcers);
+    }
 }