diff --git a/vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailActions.kt b/vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailActions.kt
index ac1e1df51a..91614d5d74 100644
--- a/vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailActions.kt
+++ b/vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailActions.kt
@@ -30,7 +30,7 @@ sealed class RoomDetailActions {
     data class TimelineEventTurnsVisible(val event: TimelineEvent) : RoomDetailActions()
     data class TimelineEventTurnsInvisible(val event: TimelineEvent) : RoomDetailActions()
     data class LoadMoreTimelineEvents(val direction: Timeline.Direction) : RoomDetailActions()
-    data class SendReaction(val reaction: String, val targetEventId: String) : RoomDetailActions()
+    data class SendReaction(val targetEventId: String, val reaction: String) : RoomDetailActions()
     data class UndoReaction(val targetEventId: String, val key: String, val reason: String? = "") : RoomDetailActions()
     data class RedactAction(val targetEventId: String, val reason: String? = "") : RoomDetailActions()
     data class UpdateQuickReactAction(val targetEventId: String, val selectedReaction: String, val add: Boolean) : RoomDetailActions()
diff --git a/vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailFragment.kt b/vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailFragment.kt
index 6907af9ff6..f09fbff09f 100644
--- a/vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailFragment.kt
+++ b/vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailFragment.kt
@@ -420,7 +420,7 @@ class RoomDetailFragment :
                     val eventId = data.getStringExtra(EmojiReactionPickerActivity.EXTRA_EVENT_ID) ?: return
                     val reaction = data.getStringExtra(EmojiReactionPickerActivity.EXTRA_REACTION_RESULT) ?: return
                     // TODO check if already reacted with that?
-                    roomDetailViewModel.process(RoomDetailActions.SendReaction(reaction, eventId))
+                    roomDetailViewModel.process(RoomDetailActions.SendReaction(eventId, reaction))
                 }
             }
         }
@@ -909,7 +909,7 @@ class RoomDetailFragment :
     override fun onClickOnReactionPill(informationData: MessageInformationData, reaction: String, on: Boolean) {
         if (on) {
             // we should test the current real state of reaction on this event
-            roomDetailViewModel.process(RoomDetailActions.SendReaction(reaction, informationData.eventId))
+            roomDetailViewModel.process(RoomDetailActions.SendReaction(informationData.eventId, reaction))
         } else {
             // I need to redact a reaction
             roomDetailViewModel.process(RoomDetailActions.UndoReaction(informationData.eventId, reaction))