diff --git a/scenes/seader_scene_read_14a.c b/scenes/seader_scene_read_14a.c
index 6d48b4a..48bbd7e 100644
--- a/scenes/seader_scene_read_14a.c
+++ b/scenes/seader_scene_read_14a.c
@@ -56,6 +56,7 @@ void seader_scene_read_14a_on_exit(void* context) {
     if(seader->poller) {
         nfc_poller_stop(seader->poller);
         nfc_poller_free(seader->poller);
+        seader->poller = NULL;
     }
 
     // Clear view
diff --git a/scenes/seader_scene_read_mfc.c b/scenes/seader_scene_read_mfc.c
index 3f9db83..21f17cd 100644
--- a/scenes/seader_scene_read_mfc.c
+++ b/scenes/seader_scene_read_mfc.c
@@ -60,6 +60,7 @@ void seader_scene_read_mfc_on_exit(void* context) {
     if(seader->poller) {
         nfc_poller_stop(seader->poller);
         nfc_poller_free(seader->poller);
+        seader->poller = NULL;
     }
 
     // Clear view
diff --git a/scenes/seader_scene_read_picopass.c b/scenes/seader_scene_read_picopass.c
index 34c4a64..2e8775b 100644
--- a/scenes/seader_scene_read_picopass.c
+++ b/scenes/seader_scene_read_picopass.c
@@ -55,6 +55,7 @@ void seader_scene_read_picopass_on_exit(void* context) {
     if(seader->picopass_poller) {
         picopass_poller_stop(seader->picopass_poller);
         picopass_poller_free(seader->picopass_poller);
+        seader->picopass_poller = NULL;
     }
 
     // Clear view