diff --git a/modules/entity_form/entity_browser_entity_form.module b/modules/entity_form/entity_browser_entity_form.module
index 73696ea..90b4350 100644
--- a/modules/entity_form/entity_browser_entity_form.module
+++ b/modules/entity_form/entity_browser_entity_form.module
@@ -38,11 +38,14 @@ function entity_browser_entity_form_inline_entity_form_reference_form_alter(&$re
     return;
   }
 
+  // Fetch the number of currently selected entities, if any.
+  $count_existing_selection = !empty($form_state->getUserInput()[$reference_form['#parents'][0]]['entities']) ? count($form_state->getUserInput()[$reference_form['#parents'][0]]['entities']) : 0;
+
   unset($reference_form['entity_id']);
   $reference_form['entity_browser'] = [
     '#type' => 'entity_browser',
     '#entity_browser' => $entity_browser_id,
-    '#cardinality' => $instance->getFieldStorageDefinition()->get('cardinality'),
+    '#cardinality' => $instance->getFieldStorageDefinition()->get('cardinality') - $count_existing_selection,
   ];
   $reference_form['#attached']['library'][] = 'entity_browser_entity_form/ief_autocomplete';
   $reference_form['actions']['ief_reference_save']['#ajax']['event'] = 'entities-selected';