diff --git a/deltachat-ffi/deltachat.h b/deltachat-ffi/deltachat.h
index 584e6939f9..9a31f2ff90 100644
--- a/deltachat-ffi/deltachat.h
+++ b/deltachat-ffi/deltachat.h
@@ -6284,6 +6284,18 @@ void dc_event_unref(dc_event_t* event);
 
 #define DC_EVENT_WEBXDC_INSTANCE_DELETED          2121
 
+/**
+ * Data received over an ephemeral peer channel.
+ *
+ * @param data1 (int) msg_id
+ * @param data2 (int) + (char*) binary data.
+ *     length is returned as integer with dc_event_get_data2_int()
+ *     and binary data is returned as dc_event_get_data2_str().
+ *     Binary data must be passed to dc_str_unref() afterwards.
+ */
+
+#define DC_EVENT_WEBXDC_REALTIME_DATA             2150
+
 /**
  * Tells that the Background fetch was completed (or timed out).
  *
diff --git a/deltachat-ffi/src/lib.rs b/deltachat-ffi/src/lib.rs
index 3e0cdc6470..61eba53fff 100644
--- a/deltachat-ffi/src/lib.rs
+++ b/deltachat-ffi/src/lib.rs
@@ -658,7 +658,6 @@ pub unsafe extern "C" fn dc_event_get_data2_int(event: *mut dc_event_t) -> libc:
         | EventType::ConnectivityChanged
         | EventType::WebxdcInstanceDeleted { .. }
         | EventType::IncomingMsgBunch { .. }
-        | EventType::WebxdcRealtimeData { .. }
         | EventType::SelfavatarChanged
         | EventType::AccountsBackgroundFetchDone
         | EventType::ChatlistChanged
@@ -679,6 +678,7 @@ pub unsafe extern "C" fn dc_event_get_data2_int(event: *mut dc_event_t) -> libc:
             status_update_serial,
             ..
         } => status_update_serial.to_u32() as libc::c_int,
+        EventType::WebxdcRealtimeData { data, .. } => data.len() as libc::c_int,
     }
 }
 
@@ -725,7 +725,6 @@ pub unsafe extern "C" fn dc_event_get_data2_str(event: *mut dc_event_t) -> *mut
         | EventType::SelfavatarChanged
         | EventType::WebxdcStatusUpdate { .. }
         | EventType::WebxdcInstanceDeleted { .. }
-        | EventType::WebxdcRealtimeData { .. }
         | EventType::AccountsBackgroundFetchDone
         | EventType::ChatEphemeralTimerModified { .. }
         | EventType::IncomingMsgBunch { .. }
@@ -746,6 +745,11 @@ pub unsafe extern "C" fn dc_event_get_data2_str(event: *mut dc_event_t) -> *mut
             let data2 = key.to_string().to_c_string().unwrap_or_default();
             data2.into_raw()
         }
+        EventType::WebxdcRealtimeData { data, .. } => {
+            let ptr = libc::malloc(data.len());
+            libc::memcpy(ptr, data.as_ptr() as *mut libc::c_void, data.len());
+            ptr as *mut libc::c_char
+        }
     }
 }
 
diff --git a/node/constants.js b/node/constants.js
index 30fb5a7b16..f753d2a388 100644
--- a/node/constants.js
+++ b/node/constants.js
@@ -66,6 +66,7 @@ module.exports = {
   DC_EVENT_SMTP_MESSAGE_SENT: 103,
   DC_EVENT_WARNING: 300,
   DC_EVENT_WEBXDC_INSTANCE_DELETED: 2121,
+  DC_EVENT_WEBXDC_REALTIME_DATA: 2150,
   DC_EVENT_WEBXDC_STATUS_UPDATE: 2120,
   DC_GCL_ADD_ALLDONE_HINT: 4,
   DC_GCL_ADD_SELF: 2,
diff --git a/node/events.js b/node/events.js
index 15596a3079..c87f31490d 100644
--- a/node/events.js
+++ b/node/events.js
@@ -37,6 +37,7 @@ module.exports = {
   2111: 'DC_EVENT_CONFIG_SYNCED',
   2120: 'DC_EVENT_WEBXDC_STATUS_UPDATE',
   2121: 'DC_EVENT_WEBXDC_INSTANCE_DELETED',
+  2150: 'DC_EVENT_WEBXDC_REALTIME_DATA',
   2200: 'DC_EVENT_ACCOUNTS_BACKGROUND_FETCH_DONE',
   2300: 'DC_EVENT_CHATLIST_CHANGED',
   2301: 'DC_EVENT_CHATLIST_ITEM_CHANGED'
diff --git a/node/lib/constants.ts b/node/lib/constants.ts
index e789d17220..e86f41d742 100644
--- a/node/lib/constants.ts
+++ b/node/lib/constants.ts
@@ -66,6 +66,7 @@ export enum C {
   DC_EVENT_SMTP_MESSAGE_SENT = 103,
   DC_EVENT_WARNING = 300,
   DC_EVENT_WEBXDC_INSTANCE_DELETED = 2121,
+  DC_EVENT_WEBXDC_REALTIME_DATA = 2150,
   DC_EVENT_WEBXDC_STATUS_UPDATE = 2120,
   DC_GCL_ADD_ALLDONE_HINT = 4,
   DC_GCL_ADD_SELF = 2,
@@ -338,6 +339,7 @@ export const EventId2EventName: { [key: number]: string } = {
   2111: 'DC_EVENT_CONFIG_SYNCED',
   2120: 'DC_EVENT_WEBXDC_STATUS_UPDATE',
   2121: 'DC_EVENT_WEBXDC_INSTANCE_DELETED',
+  2150: 'DC_EVENT_WEBXDC_REALTIME_DATA',
   2200: 'DC_EVENT_ACCOUNTS_BACKGROUND_FETCH_DONE',
   2300: 'DC_EVENT_CHATLIST_CHANGED',
   2301: 'DC_EVENT_CHATLIST_ITEM_CHANGED',