diff --git a/deltachat-jsonrpc/src/api/types/events.rs b/deltachat-jsonrpc/src/api/types/events.rs
index 35e1c46ad..918ff7c1c 100644
--- a/deltachat-jsonrpc/src/api/types/events.rs
+++ b/deltachat-jsonrpc/src/api/types/events.rs
@@ -101,6 +101,7 @@ pub enum EventType {
     /// Incoming reaction, should be notified.
     #[serde(rename_all = "camelCase")]
     IncomingReaction {
+        chat_id: u32,
         contact_id: u32,
         msg_id: u32,
         reaction: String,
@@ -335,10 +336,12 @@ impl From<CoreEventType> for EventType {
                 contact_id: contact_id.to_u32(),
             },
             CoreEventType::IncomingReaction {
+                chat_id,
                 contact_id,
                 msg_id,
                 reaction,
             } => IncomingReaction {
+                chat_id: chat_id.to_u32(),
                 contact_id: contact_id.to_u32(),
                 msg_id: msg_id.to_u32(),
                 reaction: reaction.as_str().to_string(),
diff --git a/src/events/payload.rs b/src/events/payload.rs
index 30bb40e0a..302355ad6 100644
--- a/src/events/payload.rs
+++ b/src/events/payload.rs
@@ -97,6 +97,9 @@ pub enum EventType {
 
     /// Reactions for the message changed.
     IncomingReaction {
+        /// ID of the chat which the message belongs to.
+        chat_id: ChatId,
+
         /// ID of the contact whose reaction set is changed.
         contact_id: ContactId,
 
diff --git a/src/reaction.rs b/src/reaction.rs
index f0f18b259..a54d0eb4d 100644
--- a/src/reaction.rs
+++ b/src/reaction.rs
@@ -285,6 +285,7 @@ pub(crate) async fn set_msg_reaction(
             && msg_id.get_state(context).await?.is_outgoing()
         {
             context.emit_event(EventType::IncomingReaction {
+                chat_id,
                 contact_id,
                 msg_id,
                 reaction,
@@ -582,6 +583,7 @@ Here's my footer -- bob@example.net"
 
     async fn expect_incoming_reactions_event(
         t: &TestContext,
+        expected_chat_id: ChatId,
         expected_msg_id: MsgId,
         expected_contact_id: ContactId,
         expected_reaction: &str,
@@ -599,10 +601,12 @@ Here's my footer -- bob@example.net"
             .await;
         match event {
             EventType::IncomingReaction {
+                chat_id,
                 msg_id,
                 contact_id,
                 reaction,
             } => {
+                assert_eq!(chat_id, expected_chat_id);
                 assert_eq!(msg_id, expected_msg_id);
                 assert_eq!(contact_id, expected_contact_id);
                 assert_eq!(reaction, Reaction::from(expected_reaction));
@@ -677,7 +681,14 @@ Here's my footer -- bob@example.net"
         assert_eq!(bob_reaction.as_str(), "👍");
         expect_reactions_changed_event(&alice, chat_alice.id, alice_msg.sender_msg_id, *bob_id)
             .await?;
-        expect_incoming_reactions_event(&alice, alice_msg.sender_msg_id, *bob_id, "👍").await?;
+        expect_incoming_reactions_event(
+            &alice,
+            chat_alice.id,
+            alice_msg.sender_msg_id,
+            *bob_id,
+            "👍",
+        )
+        .await?;
         expect_no_unwanted_events(&alice).await;
 
         // Alice reacts to own message.
@@ -720,8 +731,14 @@ Here's my footer -- bob@example.net"
         send_reaction(&bob, bob_msg1.id, "👍").await?;
         let bob_send_reaction = bob.pop_sent_msg().await;
         alice.recv_msg_trash(&bob_send_reaction).await;
-        expect_incoming_reactions_event(&alice, alice_msg1.sender_msg_id, alice_bob_id, "👍")
-            .await?;
+        expect_incoming_reactions_event(
+            &alice,
+            alice_chat.id,
+            alice_msg1.sender_msg_id,
+            alice_bob_id,
+            "👍",
+        )
+        .await?;
         expect_no_unwanted_events(&alice).await;
 
         let chatlist = Chatlist::try_load(&bob, 0, None, None).await?;