diff --git a/model/storage-private/src/main/java/org/keycloak/storage/managers/UserStorageSyncManager.java b/model/storage-private/src/main/java/org/keycloak/storage/managers/UserStorageSyncManager.java
index e9d46bd8b9..1b58186da2 100755
--- a/model/storage-private/src/main/java/org/keycloak/storage/managers/UserStorageSyncManager.java
+++ b/model/storage-private/src/main/java/org/keycloak/storage/managers/UserStorageSyncManager.java
@@ -207,7 +207,7 @@ public class UserStorageSyncManager {
         if (provider.getFullSyncPeriod() > 0) {
             // schedule periodic full sync for this provider
             UserStorageSyncTask task = new UserStorageSyncTask(provider, realm, sessionFactory, UserStorageSyncTask.SyncMode.FULL);
-            timer.schedule(task, provider.getFullSyncPeriod() * 1000, fullSyncTaskName);
+            timer.schedule(task, provider.getFullSyncPeriod() * 1000L, fullSyncTaskName);
         } else {
             // cancel potentially dangling task
             timer.cancelTask(fullSyncTaskName);
@@ -217,7 +217,7 @@ public class UserStorageSyncManager {
         if (provider.getChangedSyncPeriod() > 0) {
             // schedule periodic changed user sync for this provider
             UserStorageSyncTask task = new UserStorageSyncTask(provider, realm, sessionFactory, UserStorageSyncTask.SyncMode.CHANGED);
-            timer.schedule(task, provider.getChangedSyncPeriod() * 1000, changedSyncTaskName);
+            timer.schedule(task, provider.getChangedSyncPeriod() * 1000L, changedSyncTaskName);
         } else {
             // cancel potentially dangling task
             timer.cancelTask(changedSyncTaskName);
diff --git a/testsuite/integration-arquillian/tests/base/src/test/java/org/keycloak/testsuite/federation/sync/SyncFederationTest.java b/testsuite/integration-arquillian/tests/base/src/test/java/org/keycloak/testsuite/federation/sync/SyncFederationTest.java
index 8394570adf..0be94dc778 100644
--- a/testsuite/integration-arquillian/tests/base/src/test/java/org/keycloak/testsuite/federation/sync/SyncFederationTest.java
+++ b/testsuite/integration-arquillian/tests/base/src/test/java/org/keycloak/testsuite/federation/sync/SyncFederationTest.java
@@ -365,6 +365,47 @@ public class SyncFederationTest extends AbstractAuthTest {
         });
     }
 
+    @Test
+    public void test05LongSync() throws Exception {
+        // Add IgnoredDummyUserFederationProviderFactory provider
+        testingClient.server().run(session -> {
+            RealmModel appRealm = session.realms().getRealmByName(AuthRealm.TEST);
+            UserStorageProviderModel model = new UserStorageProviderModel();
+            model.setProviderId(IgnoredDummyUserFederationProviderFactory.IGNORED_PROVIDER_ID);
+            model.setPriority(1);
+            model.setName("test-sync-dummy");
+            model.setFullSyncPeriod(2147484);
+            model.setChangedSyncPeriod(2147484);
+            model.setLastSync(0);
+            appRealm.addComponentModel(model);
+        });
+
+        // run both sync methods that will be ignored
+        testingClient.server().run(session -> {
+            RealmModel appRealm = session.realms().getRealmByName(AuthRealm.TEST);
+            UserStorageProviderModel dummyModel = findDummyProviderModel(appRealm);
+            KeycloakSessionFactory sessionFactory = session.getKeycloakSessionFactory();
+            SynchronizationResult syncResult = UserStorageSyncManager.syncAllUsers(sessionFactory, appRealm.getId(), dummyModel);
+            Assert.assertTrue(syncResult.isIgnored());
+            syncResult = UserStorageSyncManager.syncChangedUsers(sessionFactory, appRealm.getId(), dummyModel);
+            Assert.assertTrue(syncResult.isIgnored());
+        });
+
+        // assert the last sync is not updated
+        testingClient.server().run(session -> {
+            RealmModel appRealm = session.realms().getRealmByName(AuthRealm.TEST);
+            UserStorageProviderModel dummyModel = findDummyProviderModel(appRealm);
+            Assert.assertEquals(0, dummyModel.getLastSync());
+        });
+
+        // remove provider
+        testingClient.server().run(session -> {
+            RealmModel appRealm = session.realms().getRealmByName(AuthRealm.TEST);
+            UserStorageProviderModel dummyModel = findDummyProviderModel(appRealm);
+            appRealm.removeComponent(dummyModel);
+        });
+    }
+
     private static void sleep(long ms) {
         try {
             log.infof("Sleeping for %d ms", ms);