diff --git a/core/lib/Drupal/Core/Extension/ModuleInstaller.php b/core/lib/Drupal/Core/Extension/ModuleInstaller.php
index 41e698c..58e2b26 100644
--- a/core/lib/Drupal/Core/Extension/ModuleInstaller.php
+++ b/core/lib/Drupal/Core/Extension/ModuleInstaller.php
@@ -316,10 +316,10 @@ public function uninstall(array $module_list, $uninstall_dependents = TRUE) {
 
     // Use the validators and throw an exception with the reasons.
     if ($reasons = $this->validateUninstall($module_list)) {
-      foreach ($reasons as $reason) {
-        $reason_message[] = implode(', ', $reason);
+      foreach ($reasons as $module_key => $reason) {
+        $reason_message[] = $module_key . ': ' . implode(', ', $reason);
       }
-      throw new ModuleUninstallValidatorException('The following reasons prevents the modules from being uninstalled: ' . implode('; ', $reason_message));
+      throw new ModuleUninstallValidatorException('The following reasons prevent the modules from being uninstalled: ' . implode('; ', $reason_message));
     }
     // Set the actual module weights.
     $module_list = array_map(function ($module) use ($module_data) {
diff --git a/core/modules/system/src/Tests/Field/FieldModuleUninstallValidatorTest.php b/core/modules/system/src/Tests/Field/FieldModuleUninstallValidatorTest.php
index 3720321..cc1bfbd 100644
--- a/core/modules/system/src/Tests/Field/FieldModuleUninstallValidatorTest.php
+++ b/core/modules/system/src/Tests/Field/FieldModuleUninstallValidatorTest.php
@@ -83,7 +83,7 @@ public function testUninstallingModule() {
     }
     catch (ModuleUninstallValidatorException $e) {
       $this->pass($message);
-      $this->assertEqual($e->getMessage(), 'The following reasons prevents the modules from being uninstalled: There is data for the field extra_base_field on entity type Test entity');
+      $this->assertEqual($e->getMessage(), 'The following reasons prevent the modules from being uninstalled: entity_test_extra: There is data for the field extra_base_field on entity type Test entity');
     }
 
     // Verify uninstalling entity_test is not possible when there is content for
diff --git a/core/modules/system/system.admin.inc b/core/modules/system/system.admin.inc
index b07605f..9577a49 100644
--- a/core/modules/system/system.admin.inc
+++ b/core/modules/system/system.admin.inc
@@ -317,7 +317,7 @@ function theme_system_modules_uninstall($variables) {
       $disabled_reasons = drupal_render($disabled_reasons);
       $disabled_header = \Drupal::translation()->formatPlural(count($form['modules'][$module]['#validation_reasons']),
         'The following reason prevents @module from being uninstalled:',
-        'The following reasons prevents @module from being uninstalled:',
+        'The following reasons prevent @module from being uninstalled:',
         array('@module' => $form['modules'][$module]['#module_name']));
     }
     $rows[] = array(