diff -u b/modules/key_encrypt/src/Plugin/KeyProvider/EncryptedConfigKeyProvider.php b/modules/key_encrypt/src/Plugin/KeyProvider/EncryptedConfigKeyProvider.php
--- b/modules/key_encrypt/src/Plugin/KeyProvider/EncryptedConfigKeyProvider.php
+++ b/modules/key_encrypt/src/Plugin/KeyProvider/EncryptedConfigKeyProvider.php
@@ -107,12 +107,16 @@
     }
   }
 
+  /**
+   * {@inheritdoc}
+   */
   public function calculateDependencies() {
+    $dependencies = parent::calculateDependencies();
     /** @var EncryptionProfile $encryption_profile */
-    $encryption_profile = EncryptionProfile::load($this->configuration['encryption_profile']);
-    return [
-      'config' => [$encryption_profile->getConfigDependencyName()],
-    ];
+    if ($encryption_profile = EncryptionProfile::load($this->configuration['encryption_profile'])) {
+      $dependencies['config'][] = $encryption_profile->getConfigDependencyName(),
+    }
+    return $dependencies;
   }
 
 }