diff --git a/dunst.c b/dunst.c
index a5f13f7..c7d7185 100644
--- a/dunst.c
+++ b/dunst.c
@@ -757,7 +757,7 @@ int close_notification_by_id(int id, int reason)
                 }
         }
 
-        if (reason > 0 && reason < 4) {
+        if (reason > 0 && reason < 4 && target != NULL) {
                 notificationClosed(target, reason);
         }
 
diff --git a/dunst_dbus.c b/dunst_dbus.c
index 1e3ec51..a85e597 100644
--- a/dunst_dbus.c
+++ b/dunst_dbus.c
@@ -254,7 +254,13 @@ void notificationClosed(notification * n, int reason)
 {
         DBusMessage *dmsg;
         DBusMessageIter args;
-        int id = n->id;
+        int id;
+
+        if (n == NULL) {
+                return;
+        }
+
+        id = n->id;
 
         dmsg =
             dbus_message_new_signal("/org/freedesktop/Notifications",