diff --git a/thunar-volman/tvm-crypto-volume.c b/thunar-volman/tvm-crypto-volume.c
index 550089e..2f595d3 100644
--- a/thunar-volman/tvm-crypto-volume.c
+++ b/thunar-volman/tvm-crypto-volume.c
@@ -257,6 +257,13 @@ tvm_crypto_volume_dbus_call_done (DBusPendingCall *call,
   gtk_main_quit();
 }
 
+static gboolean 
+get_udi_again (gpointer user_data)
+{
+  gtk_main_quit();
+  return FALSE;
+}
+
 static gchar *
 tvm_crypto_volume_mount_install_crypto_volume (LibHalContext *context,
 				 const gchar *udi, 
@@ -388,8 +395,19 @@ oom:  g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_NOMEM, g_strerror (ENOMEM))
     }
   else
     {
+      gint num_tries = 0;
       dbus_message_unref (result);
-      plain_udi = libhal_volume_crypto_get_clear_volume_udi (context, volume);
+      while (plain_udi == NULL && num_tries < 3) {
+        plain_udi = libhal_volume_crypto_get_clear_volume_udi (context, volume);
+        if (plain_udi == NULL) {
+          /* asking for the plain UDI too quickly may get a NULL one. Let's try
+           * again after one second. */
+          g_timeout_add_seconds(1, get_udi_again, NULL);
+          gtk_main();
+        }
+        num_tries++;
+        g_debug("try %d, plain udi %s", num_tries, plain_udi);
+      }
     }
 
 out: