diff --git a/applications/main/nfc/scenes/nfc_scene_mf_ultralight_unlock_auto.c b/applications/main/nfc/scenes/nfc_scene_mf_ultralight_unlock_auto.c
index 0369afcbd..e94c97f3c 100644
--- a/applications/main/nfc/scenes/nfc_scene_mf_ultralight_unlock_auto.c
+++ b/applications/main/nfc/scenes/nfc_scene_mf_ultralight_unlock_auto.c
@@ -4,7 +4,7 @@ bool nfc_scene_mf_ultralight_unlock_auto_worker_callback(NfcWorkerEvent event, v
     Nfc* nfc = context;
 
     if(event == NfcWorkerEventMfUltralightPwdAuth) {
-        MfUltralightAuth* auth = nfc_worker_get_event_data(nfc->worker);
+        MfUltralightAuth* auth = &nfc->dev->dev_data.mf_ul_auth;
         memcpy(nfc->byte_input_store, auth->pwd.raw, sizeof(auth->pwd.raw));
         nfc->dev->dev_data.mf_ul_data.auth_method = MfUltralightAuthMethodManual;
     }
diff --git a/lib/nfc/nfc_device.h b/lib/nfc/nfc_device.h
index 6cac72c6b..76b2f5a01 100644
--- a/lib/nfc/nfc_device.h
+++ b/lib/nfc/nfc_device.h
@@ -53,6 +53,7 @@ typedef struct {
     union {
         NfcReaderRequestData reader_data;
         NfcMfClassicDictAttackData mf_classic_dict_attack_data;
+        MfUltralightAuth mf_ul_auth;
     };
     union {
         EmvData emv_data;
diff --git a/lib/nfc/nfc_worker.c b/lib/nfc/nfc_worker.c
index fc05b8264..7d1ff34dc 100644
--- a/lib/nfc/nfc_worker.c
+++ b/lib/nfc/nfc_worker.c
@@ -20,7 +20,6 @@ NfcWorker* nfc_worker_alloc() {
 
     nfc_worker->callback = NULL;
     nfc_worker->context = NULL;
-    nfc_worker->event_data = NULL;
     nfc_worker->storage = furi_record_open(RECORD_STORAGE);
 
     // Initialize rfal
@@ -50,10 +49,6 @@ NfcWorkerState nfc_worker_get_state(NfcWorker* nfc_worker) {
     return nfc_worker->state;
 }
 
-void* nfc_worker_get_event_data(NfcWorker* nfc_worker) {
-    return nfc_worker->event_data;
-}
-
 void nfc_worker_start(
     NfcWorker* nfc_worker,
     NfcWorkerState state,
@@ -449,12 +444,11 @@ void nfc_worker_emulate_mf_ultralight(NfcWorker* nfc_worker) {
             5000);
         // Check if there was an auth attempt
         if(emulator.auth_attempted) {
-            nfc_worker->event_data = &emulator.auth_attempt;
+            nfc_worker->dev_data->mf_ul_auth = emulator.auth_attempt; // Make copy
             if(nfc_worker->callback) {
                 nfc_worker->callback(NfcWorkerEventMfUltralightPwdAuth, nfc_worker->context);
             }
             emulator.auth_attempted = false;
-            nfc_worker->event_data = NULL;
         }
         // Check if data was modified
         if(emulator.data_changed) {
diff --git a/lib/nfc/nfc_worker.h b/lib/nfc/nfc_worker.h
index 290d3d741..002b0f1da 100644
--- a/lib/nfc/nfc_worker.h
+++ b/lib/nfc/nfc_worker.h
@@ -71,8 +71,6 @@ NfcWorker* nfc_worker_alloc();
 
 NfcWorkerState nfc_worker_get_state(NfcWorker* nfc_worker);
 
-void* nfc_worker_get_event_data(NfcWorker* nfc_worker);
-
 void nfc_worker_free(NfcWorker* nfc_worker);
 
 void nfc_worker_start(
diff --git a/lib/nfc/nfc_worker_i.h b/lib/nfc/nfc_worker_i.h
index 5c7592833..526182f9a 100644
--- a/lib/nfc/nfc_worker_i.h
+++ b/lib/nfc/nfc_worker_i.h
@@ -23,7 +23,6 @@ struct NfcWorker {
 
     NfcWorkerCallback callback;
     void* context;
-    void* event_data;
 
     NfcWorkerState state;