diff --git a/core/lib/Drupal/Core/Plugin/Discovery/HookDiscovery.php b/core/lib/Drupal/Core/Plugin/Discovery/HookDiscovery.php
index 9d1bfa3..3331e97 100644
--- a/core/lib/Drupal/Core/Plugin/Discovery/HookDiscovery.php
+++ b/core/lib/Drupal/Core/Plugin/Discovery/HookDiscovery.php
@@ -54,7 +54,7 @@ public function getDefinitions() {
     foreach ($this->moduleHandler->getImplementations($this->hook) as $module) {
       $result = $this->moduleHandler->invoke($module, $this->hook);
       foreach ($result as $plugin_id => $definition) {
-        $definition['module'] = $module;
+        $definition['provider'] = $module;
         $definitions[$plugin_id] = $definition;
       }
     }
diff --git a/core/tests/Drupal/Tests/Core/Plugin/Discovery/HookDiscoveryTest.php b/core/tests/Drupal/Tests/Core/Plugin/Discovery/HookDiscoveryTest.php
index 650ea95..59c4ee4 100644
--- a/core/tests/Drupal/Tests/Core/Plugin/Discovery/HookDiscoveryTest.php
+++ b/core/tests/Drupal/Tests/Core/Plugin/Discovery/HookDiscoveryTest.php
@@ -80,9 +80,9 @@ public function testGetDefinitions() {
     $this->assertEquals($definitions['test_id_3']['class'], 'Drupal\plugin_test\Plugin\plugin_test\fruit\Cherry');
 
     // Ensure that the module was set.
-    $this->assertEquals($definitions['test_id_1']['module'], 'hook_discovery_test');
-    $this->assertEquals($definitions['test_id_2']['module'], 'hook_discovery_test');
-    $this->assertEquals($definitions['test_id_3']['module'], 'hook_discovery_test2');
+    $this->assertEquals($definitions['test_id_1']['provider'], 'hook_discovery_test');
+    $this->assertEquals($definitions['test_id_2']['provider'], 'hook_discovery_test');
+    $this->assertEquals($definitions['test_id_3']['provider'], 'hook_discovery_test2');
   }
 
   /**
@@ -108,15 +108,15 @@ public function testGetDefinition() {
 
     $plugin_definition = $this->hookDiscovery->getDefinition('test_id_1');
     $this->assertEquals($plugin_definition['class'], 'Drupal\plugin_test\Plugin\plugin_test\fruit\Apple');
-    $this->assertEquals($plugin_definition['module'], 'hook_discovery_test');
+    $this->assertEquals($plugin_definition['provider'], 'hook_discovery_test');
 
     $plugin_definition = $this->hookDiscovery->getDefinition('test_id_2');
     $this->assertEquals($plugin_definition['class'], 'Drupal\plugin_test\Plugin\plugin_test\fruit\Orange');
-    $this->assertEquals($plugin_definition['module'], 'hook_discovery_test');
+    $this->assertEquals($plugin_definition['provider'], 'hook_discovery_test');
 
     $plugin_definition = $this->hookDiscovery->getDefinition('test_id_3');
     $this->assertEquals($plugin_definition['class'], 'Drupal\plugin_test\Plugin\plugin_test\fruit\Cherry');
-    $this->assertEquals($plugin_definition['module'], 'hook_discovery_test2');
+    $this->assertEquals($plugin_definition['provider'], 'hook_discovery_test2');
   }
 
   /**