diff --git a/core/lib/Drupal/Core/Image/Image.php b/core/lib/Drupal/Core/Image/Image.php
index 6d4da44..4d2611b 100644
--- a/core/lib/Drupal/Core/Image/Image.php
+++ b/core/lib/Drupal/Core/Image/Image.php
@@ -286,6 +286,14 @@ protected function processInfo() {
    * @todo Drop this in https://drupal.org/node/2073759 in favor of new apply().
    */
   public function __call($method, $arguments) {
+    // @todo Temporary to avoid that legacy GD setResource(), getResource(),
+    //  hasResource() methods moved to GD toolkit in #2103621 get invoked
+    //  from this class anyway through the magic __call. Will be removed
+    //  through https://drupal.org/node/2073759, when call_user_func_array()
+    //  will be replaced by $this->toolkit->apply($name, $this, $arguments).
+    if (in_array($method, array('setResource', 'getResource', 'hasResource'))) {
+      throw new \BadMethodCallException();
+    }
     if (is_callable(array($this->toolkit, $method))) {
       // @todo In https://drupal.org/node/2073759, call_user_func_array() will
       //   be replaced by $this->toolkit->apply($name, $this, $arguments).