diff --git a/src/Plugin/GraphQL/Fields/SearchAPISearch.php b/src/Plugin/GraphQL/Fields/SearchAPISearch.php
index 23b8148..0213a98 100644
--- a/src/Plugin/GraphQL/Fields/SearchAPISearch.php
+++ b/src/Plugin/GraphQL/Fields/SearchAPISearch.php
@@ -146,6 +146,9 @@ private function addConditions($conditions) {
    *  The conditions to be added.
    */
   private function addConditionGroup($condition_group_arg) {
+    if(empty($condition_group_arg['groups'])) {
+      return;
+    }
 
     // Loop through the groups in the args.
     foreach ($condition_group_arg['groups'] as $group) {