diff --git a/core/modules/node/src/Plugin/migrate/D6NodeDeriver.php b/core/modules/node/src/Plugin/migrate/D6NodeDeriver.php
index 904c2f8..3e9147e 100644
--- a/core/modules/node/src/Plugin/migrate/D6NodeDeriver.php
+++ b/core/modules/node/src/Plugin/migrate/D6NodeDeriver.php
@@ -148,11 +148,17 @@ public function getDerivativeDefinitions($base_plugin_definition) {
 
     // If the taxonomy module does not exist, then we do not have any terms.
     if ($this->includeTerms) {
-      $source_plugin = static::getSourcePlugin('d6_vocabulary_field_instance');
-      $source_plugin->checkRequirements();
+      try {
+        $source_plugin = static::getSourcePlugin('d6_vocabulary_field_instance');
+        $source_plugin->checkRequirements();
 
-      foreach ($source_plugin as $row) {
-        $fields[$row->getSourceProperty('bundle')][$row->getSourceProperty('field_name')] = $row->getSourceProperty('field_name');
+        foreach ($source_plugin as $row) {
+          $fields[$row->getSourceProperty('bundle')][$row->getSourceProperty('field_name')] = $row->getSourceProperty('field_name');
+        }
+      }
+      catch (RequirementsException $e) {
+        // If checkRequirements() failed then the taxonomy module did not exist
+        // and we do not have any taxonomy reference fields.
       }
     }