diff --git a/services/core/java/com/android/server/notification/SnoozeHelper.java b/services/core/java/com/android/server/notification/SnoozeHelper.java
index babe4eafd8f35..12c16fc43bd3f 100644
--- a/services/core/java/com/android/server/notification/SnoozeHelper.java
+++ b/services/core/java/com/android/server/notification/SnoozeHelper.java
@@ -129,7 +129,7 @@ public final class SnoozeHelper {
     protected Long getSnoozeTimeForUnpostedNotification(int userId, String pkg, String key) {
         Long time = null;
         synchronized (mLock) {
-            time = mPersistedSnoozedNotifications.get(key);
+            time = mPersistedSnoozedNotifications.get(getTrimmedString(key));
         }
         if (time == null) {
             time = 0L;
@@ -139,7 +139,7 @@ public final class SnoozeHelper {
 
     protected String getSnoozeContextForUnpostedNotification(int userId, String pkg, String key) {
         synchronized (mLock) {
-            return mPersistedSnoozedNotificationsWithContext.get(key);
+            return mPersistedSnoozedNotificationsWithContext.get(getTrimmedString(key));
         }
     }
 
@@ -364,8 +364,9 @@ public final class SnoozeHelper {
                 final NotificationRecord record = mSnoozedNotifications.valueAt(i);
                 if (record.getUserId() == userId && record.getSbn().getPackageName().equals(pkg)) {
                     mSnoozedNotifications.removeAt(i);
-                    mPersistedSnoozedNotificationsWithContext.remove(record.getKey());
-                    mPersistedSnoozedNotifications.remove(record.getKey());
+                    String trimmedKey = getTrimmedString(record.getKey());
+                    mPersistedSnoozedNotificationsWithContext.remove(trimmedKey);
+                    mPersistedSnoozedNotifications.remove(trimmedKey);
                     Runnable runnable = () -> {
                         final PendingIntent pi = createPendingIntent(record.getKey());
                         mAm.cancel(pi);
@@ -386,8 +387,9 @@ public final class SnoozeHelper {
                 final NotificationRecord record = mSnoozedNotifications.valueAt(i);
                 if (record.getUserId() == userId) {
                     mSnoozedNotifications.removeAt(i);
-                    mPersistedSnoozedNotificationsWithContext.remove(record.getKey());
-                    mPersistedSnoozedNotifications.remove(record.getKey());
+                    String trimmedKey = getTrimmedString(record.getKey());
+                    mPersistedSnoozedNotificationsWithContext.remove(trimmedKey);
+                    mPersistedSnoozedNotifications.remove(trimmedKey);
 
                     Runnable runnable = () -> {
                         final PendingIntent pi = createPendingIntent(record.getKey());
diff --git a/services/tests/uiservicestests/src/com/android/server/notification/SnoozeHelperTest.java b/services/tests/uiservicestests/src/com/android/server/notification/SnoozeHelperTest.java
index 1f117b3697c97..9c3d5a7fb6d9d 100644
--- a/services/tests/uiservicestests/src/com/android/server/notification/SnoozeHelperTest.java
+++ b/services/tests/uiservicestests/src/com/android/server/notification/SnoozeHelperTest.java
@@ -234,7 +234,7 @@ public class SnoozeHelperTest extends UiServiceTestCase {
     }
 
     @Test
-    public void testScheduleRepostsForLongTagPersistedNotification() throws Exception {
+    public void testLongTagPersistedNotification() throws Exception {
         String longTag = "A".repeat(66000);
         NotificationRecord r = getNotificationRecord("pkg", 1, longTag, UserHandle.SYSTEM);
         mSnoozeHelper.snooze(r, 0);
@@ -612,7 +612,8 @@ public class SnoozeHelperTest extends UiServiceTestCase {
     public void testClearData_userPackage() {
         // snooze 2 from same package
         NotificationRecord r = getNotificationRecord("pkg", 1, "one", UserHandle.SYSTEM);
-        NotificationRecord r2 = getNotificationRecord("pkg", 2, "two", UserHandle.SYSTEM);
+        NotificationRecord r2 = getNotificationRecord("pkg", 2, "two" + "2".repeat(66000),
+                UserHandle.SYSTEM); // include notif with very long tag
         mSnoozeHelper.snooze(r, 1000);
         mSnoozeHelper.snooze(r2, 1000);
         assertTrue(mSnoozeHelper.isSnoozed(
@@ -634,11 +635,14 @@ public class SnoozeHelperTest extends UiServiceTestCase {
 
     @Test
     public void testClearData_user() {
-        // snooze 2 from same package
+        // snooze 2 from same package, including notifs with long tag
         NotificationRecord r = getNotificationRecord("pkg", 1, "one", UserHandle.SYSTEM);
-        NotificationRecord r2 = getNotificationRecord("pkg2", 2, "two", UserHandle.SYSTEM);
-        NotificationRecord r3 = getNotificationRecord("pkg2", 3, "three", UserHandle.SYSTEM);
-        NotificationRecord r4 = getNotificationRecord("pkg", 2, "two", UserHandle.ALL);
+        NotificationRecord r2 = getNotificationRecord("pkg2", 2, "two" + "2".repeat(66000),
+                UserHandle.SYSTEM);
+        NotificationRecord r3 = getNotificationRecord("pkg2", 3, "three",
+                UserHandle.SYSTEM);
+        NotificationRecord r4 = getNotificationRecord("pkg", 2, "two" + "2".repeat(66000),
+                UserHandle.ALL);
         mSnoozeHelper.snooze(r, 1000);
         mSnoozeHelper.snooze(r2, 1000);
         mSnoozeHelper.snooze(r3, "until");
@@ -653,6 +657,19 @@ public class SnoozeHelperTest extends UiServiceTestCase {
         assertTrue(mSnoozeHelper.isSnoozed(
                 UserHandle.USER_ALL, r4.getSbn().getPackageName(), r4.getKey()));
 
+        assertFalse(0L == mSnoozeHelper.getSnoozeTimeForUnpostedNotification(
+                r.getUser().getIdentifier(), r.getSbn().getPackageName(),
+                r.getSbn().getKey()));
+        assertFalse(0L == mSnoozeHelper.getSnoozeTimeForUnpostedNotification(
+                r2.getUser().getIdentifier(), r2.getSbn().getPackageName(),
+                r2.getSbn().getKey()));
+        assertNotNull(mSnoozeHelper.getSnoozeContextForUnpostedNotification(
+                r3.getUser().getIdentifier(), r3.getSbn().getPackageName(),
+                r3.getSbn().getKey()));
+        assertNotNull(mSnoozeHelper.getSnoozeContextForUnpostedNotification(
+                r4.getUser().getIdentifier(), r4.getSbn().getPackageName(),
+                r4.getSbn().getKey()));
+
         // clear data
         mSnoozeHelper.clearData(UserHandle.USER_SYSTEM);
 
@@ -666,18 +683,18 @@ public class SnoozeHelperTest extends UiServiceTestCase {
         assertTrue(mSnoozeHelper.isSnoozed(
                 UserHandle.USER_SYSTEM, r4.getSbn().getPackageName(), r4.getKey()));
 
-        assertNull(mSnoozeHelper.getSnoozeContextForUnpostedNotification(
-                r3.getUser().getIdentifier(), r3.getSbn().getPackageName(),
-                r3.getSbn().getKey()));
-        assertNotNull(mSnoozeHelper.getSnoozeContextForUnpostedNotification(
-                r4.getUser().getIdentifier(), r4.getSbn().getPackageName(),
-                r4.getSbn().getKey()));
         assertEquals(0L, mSnoozeHelper.getSnoozeTimeForUnpostedNotification(
                 r.getUser().getIdentifier(), r.getSbn().getPackageName(),
                 r.getSbn().getKey()).longValue());
         assertEquals(0L, mSnoozeHelper.getSnoozeTimeForUnpostedNotification(
                 r2.getUser().getIdentifier(), r2.getSbn().getPackageName(),
                 r2.getSbn().getKey()).longValue());
+        assertNull(mSnoozeHelper.getSnoozeContextForUnpostedNotification(
+                r3.getUser().getIdentifier(), r3.getSbn().getPackageName(),
+                r3.getSbn().getKey()));
+        assertNotNull(mSnoozeHelper.getSnoozeContextForUnpostedNotification(
+                r4.getUser().getIdentifier(), r4.getSbn().getPackageName(),
+                r4.getSbn().getKey()));
 
         // 2 for initial timed-snoozes, once each for canceling the USER_SYSTEM snoozes
         verify(mAm, times(5)).cancel(any(PendingIntent.class));