diff --git a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrAccountDataSource.kt b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrAccountDataSource.kt
index 39deb6646..7ba2fa2ca 100644
--- a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrAccountDataSource.kt
+++ b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrAccountDataSource.kt
@@ -59,7 +59,7 @@ object NostrAccountDataSource: NostrDataSource<Note>("AccountData") {
 
     return LocalCache.notes.values
       .filter { (it.event is TextNoteEvent || it.event is RepostEvent) && it.author?.pubkeyHex in allowSet }
-      .sortedBy { it.event!!.createdAt }
+      .sortedBy { it.event?.createdAt }
       .reversed()
   }
 
diff --git a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrChatRoomDataSource.kt b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrChatRoomDataSource.kt
index 59afa45f6..2f260bb36 100644
--- a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrChatRoomDataSource.kt
+++ b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrChatRoomDataSource.kt
@@ -35,7 +35,7 @@ object NostrChatRoomDataSource: NostrDataSource<Note>("ChatroomFeed") {
   override fun feed(): List<Note> {
     val messages = account.userProfile().messages[withUser]
 
-    return messages?.sortedBy { it.event!!.createdAt } ?: emptyList()
+    return messages?.sortedBy { it.event?.createdAt } ?: emptyList()
   }
 
   override fun updateChannelFilters() {
diff --git a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrGlobalDataSource.kt b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrGlobalDataSource.kt
index d5ef100f2..de69847a4 100644
--- a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrGlobalDataSource.kt
+++ b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrGlobalDataSource.kt
@@ -17,7 +17,7 @@ object NostrGlobalDataSource: NostrDataSource<Note>("GlobalFeed") {
     .filter {
       it.event is TextNoteEvent && (it.event as TextNoteEvent).replyTos.isEmpty()
     }
-    .sortedBy { it.event!!.createdAt }
+    .sortedBy { it.event?.createdAt }
     .reversed()
 
   override fun updateChannelFilters() {
diff --git a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrHomeDataSource.kt b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrHomeDataSource.kt
index 3ead775bb..a752aba31 100644
--- a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrHomeDataSource.kt
+++ b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrHomeDataSource.kt
@@ -76,7 +76,7 @@ object NostrHomeDataSource: NostrDataSource<Note>("HomeFeed") {
 
     return LocalCache.notes.values
       .filter { (it.event is TextNoteEvent || it.event is RepostEvent) && it.author?.pubkeyHex in allowSet }
-      .sortedBy { it.event!!.createdAt }
+      .sortedBy { it.event?.createdAt }
       .reversed()
   }
 
diff --git a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrNotificationDataSource.kt b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrNotificationDataSource.kt
index 366ab85df..1c1303df8 100644
--- a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrNotificationDataSource.kt
+++ b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrNotificationDataSource.kt
@@ -20,7 +20,7 @@ object NostrNotificationDataSource: NostrDataSource<Note>("NotificationFeed") {
       set.filter { it.event != null }
     }
 
-    return filtered.sortedBy { it.event!!.createdAt }.reversed()
+    return filtered.sortedBy { it.event?.createdAt }.reversed()
   }
 
   override fun updateChannelFilters() {