diff --git a/fillpdf.install b/fillpdf.install
index 295ef24633d3b6ce53e9255238d81fed7af854e1..d96552275e7d8c224e2f45ffca57bc5df9cf6389 100644
--- a/fillpdf.install
+++ b/fillpdf.install
@@ -195,12 +195,17 @@ function fillpdf_update_8109() {
 }
 
 /**
- * Install FillPDF legacy backend sub-module.
+ * Install 'fillpdf_legacy' sub-module, uninstall 'fillpdf_next' sub-module.
  */
 function fillpdf_update_8110() {
+  /** @var \Drupal\Core\Extension\ModuleInstaller $module_installer */
+  $module_installer = \Drupal::service('module_installer');
+
+  if (\Drupal::moduleHandler()->moduleExists('fillpdf_next')) {
+    $module_installer->uninstall(['fillpdf_next']);
+  }
+
   if (!\Drupal::moduleHandler()->moduleExists('fillpdf_legacy')) {
-    /** @var \Drupal\Core\Extension\ModuleInstaller $module_installer */
-    $module_installer = \Drupal::service('module_installer');
     $module_installer->install(['fillpdf_legacy']);
 
     $base_url = \Drupal::request()->getBasePath();
diff --git a/modules/fillpdf_next/fillpdf_next.info.yml b/modules/fillpdf_next/fillpdf_next.info.yml
index 53422bed8c5938c62e4f8d0ffa2005233d8399e3..475c3e89a4af1a590e8ad2898cf027fe543be6d1 100644
--- a/modules/fillpdf_next/fillpdf_next.info.yml
+++ b/modules/fillpdf_next/fillpdf_next.info.yml
@@ -1,9 +1,6 @@
 name: 'FillPDF Next [EXPERIMENTAL]'
 type: module
-description: 'Development version for the next FillPDF branch (current status: experimental, may break your site).'
+description: 'Deprecated, please remove.'
 core: 8.x
-php: 7.1
 package: Other
-dependencies:
-  - drupal:fillpdf
-  - drupal:devel
+hidden: true
diff --git a/modules/fillpdf_next/fillpdf_next.services.yml b/modules/fillpdf_next/fillpdf_next.services.yml
deleted file mode 100644
index 4dacfe539ef4db1c02494740adfe00e5327fdcaf..0000000000000000000000000000000000000000
--- a/modules/fillpdf_next/fillpdf_next.services.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-services:
-  fillpdf_next:
-    class: Drupal\fillpdf_next\FillPdfNext
diff --git a/modules/fillpdf_next/src/FillPdfNext.php b/modules/fillpdf_next/src/FillPdfNext.php
deleted file mode 100644
index b8b7c0aff8ef6df2d2d1182eb20708c5ce4d5008..0000000000000000000000000000000000000000
--- a/modules/fillpdf_next/src/FillPdfNext.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-namespace Drupal\fillpdf_next;
-
-/**
- * FillPdf next service.
- *
- * @internal
- */
-class FillPdfNext {}