diff --git a/src/Generator.php b/src/Generator.php
index dfc56d0bd..98f7d83f7 100644
--- a/src/Generator.php
+++ b/src/Generator.php
@@ -192,7 +192,7 @@ public function createClassNameDetails(string $name, string $namespacePrefix, st
                 if (!empty($namespacePrefix) && empty($suffix)) {
                     $check = \sprintf('%s\%s', $namespacePrefix, $check);
                 }
-		Validator::classDoesNotExist($check);
+                Validator::classDoesNotExist($check);
 
                 $className = rtrim($fullNamespacePrefix, '\\').'\\'.$className;
             } catch (RuntimeCommandException) {