diff --git a/src/Support/Storage/ValidateConfig.php b/src/Support/Storage/ValidateConfig.php
index a987f882f59640cac02c6e7fcecfc0f16735ffcc..d12af0ccb75ab76078e2a84dcb660486301cbcfc 100644
--- a/src/Support/Storage/ValidateConfig.php
+++ b/src/Support/Storage/ValidateConfig.php
@@ -134,7 +134,7 @@ final class ValidateConfig
     }
 
     /**
-     * Set the custom rules namespace prefix, If more than one exists, they all take effect
+     * Set the custom rule namespace prefix, If more than one exists, they all take effect
      *
      * @link https://v.neww7.com/en/4/Rule.html#pre-processing
      * @param string $rulesPath Custom rules namespace prefixes
@@ -142,6 +142,9 @@ final class ValidateConfig
      */
     public function setRulesPath(string $rulesPath): ValidateConfig
     {
+        if ('\\' !== substr($rulesPath, -1)) {
+            $rulesPath = $rulesPath . '\\';
+        }
         $this->rulesPath[] = $rulesPath;
         $this->rulesPath   = array_unique($this->rulesPath);
         return $this;