diff --git a/libraries/push/impl/src/main/kotlin/io/element/android/libraries/push/impl/notifications/DefaultNotifiableEventResolver.kt b/libraries/push/impl/src/main/kotlin/io/element/android/libraries/push/impl/notifications/DefaultNotifiableEventResolver.kt
index abbda10a3c..beea34de76 100644
--- a/libraries/push/impl/src/main/kotlin/io/element/android/libraries/push/impl/notifications/DefaultNotifiableEventResolver.kt
+++ b/libraries/push/impl/src/main/kotlin/io/element/android/libraries/push/impl/notifications/DefaultNotifiableEventResolver.kt
@@ -284,8 +284,12 @@ class DefaultNotifiableEventResolver(
                 // Note: this case will be handled below
                 val redactedEventId = content.redactedEventId
                 if (redactedEventId == null) {
-                    Timber.tag(loggerTag.value).d("redactedEventId is null.")
-                    throw NotificationResolverException.UnknownError("redactedEventId is null")
+                    // Treat it as filtered out rather than as an error: an unknown error is turned
+                    // into a visible "you have N notifications" fallback plus a battery banner, so a
+                    // redaction we cannot map would notify about a message that was just deleted.
+                    // See https://github.com/element-hq/element-x-android/issues/5766
+                    Timber.tag(loggerTag.value).w("Ignoring redaction notification with no redactedEventId.")
+                    throw NotificationResolverException.EventFilteredOut
                 } else {
                     ResolvedPushEvent.Redaction(
                         sessionId = userId,
diff --git a/libraries/push/impl/src/test/kotlin/io/element/android/libraries/push/impl/notifications/DefaultNotifiableEventResolverTest.kt b/libraries/push/impl/src/test/kotlin/io/element/android/libraries/push/impl/notifications/DefaultNotifiableEventResolverTest.kt
index eedc107c67..2544b94543 100644
--- a/libraries/push/impl/src/test/kotlin/io/element/android/libraries/push/impl/notifications/DefaultNotifiableEventResolverTest.kt
+++ b/libraries/push/impl/src/test/kotlin/io/element/android/libraries/push/impl/notifications/DefaultNotifiableEventResolverTest.kt
@@ -818,7 +818,7 @@ class DefaultNotifiableEventResolverTest : RobolectricTest() {
     }
 
     @Test
-    fun `resolve RoomRedaction with null redactedEventId should return null`() = runTest {
+    fun `resolve RoomRedaction with null redactedEventId is filtered out`() = runTest {
         val sut = createDefaultNotifiableEventResolver(
             notificationResult = Result.success(
                 mapOf(
@@ -834,6 +834,9 @@ class DefaultNotifiableEventResolverTest : RobolectricTest() {
         val request = aPushRequest(A_SESSION_ID, A_ROOM_ID, AN_EVENT_ID, "firebase")
         val result = sut.resolveEvents(A_SESSION_ID, listOf(request))
         assertThat(result.getEvent(request)?.getOrNull()).isNull()
+        // Must be EventFilteredOut and not an error: the result processor renders a fallback
+        // notification for any other exception, which is the bug in #5766.
+        assertThat(result.getEvent(request)?.exceptionOrNull()).isEqualTo(NotificationResolverException.EventFilteredOut)
     }
 
     @Test