diff --git a/src/Form/LayoutParagraphsModalSettingsForm.php b/src/Form/LayoutParagraphsModalSettingsForm.php
index 7545dd3fac6e6506f46c102886485b3c7c66bf6b..af0b1e00056a0d421709c3e26524335c2b80bae5 100644
--- a/src/Form/LayoutParagraphsModalSettingsForm.php
+++ b/src/Form/LayoutParagraphsModalSettingsForm.php
@@ -102,7 +102,6 @@ class LayoutParagraphsModalSettingsForm extends ConfigFormBase {
     $lp_config->set('width', $form_state->getValue('width'));
     $lp_config->set('height', $form_state->getValue('height'));
     $lp_config->set('autoresize', $form_state->getValue('autoresize'));
-    $lp_config->set('theme_display', $form_state->getValue('theme_display'));
     $lp_config->save();
     // Confirmation on form submission.
     $this->messenger()->addMessage($this->t('The Layout Paragraphs modal settings have been saved.'));