diff --git a/src/Libs/Model.php b/src/Libs/Model.php
index 566c2e6..9d09a1c 100644
--- a/src/Libs/Model.php
+++ b/src/Libs/Model.php
@@ -166,9 +166,9 @@ class Model
 
             throw new Exception(
                 "\nError at query to database.\n" .
-                    "Query: $query\n" .
-                    "Vars: $vars\n" .
-                    "Error:\n" . $e->getMessage()
+                "Query: $query\n" .
+                "Vars: $vars\n" .
+                "Error:\n" . $e->getMessage()
             );
         }
 
@@ -731,30 +731,30 @@ class Model
     }
 
     /**
-     * Defines WHERE using EXIST in the SQL statement.
+     * Defines WHERE using EXISTS in the SQL statement.
      *
      * @param string $query
      *                      SQL query.
      *
      * @return static
      */
-    public static function whereExist(string $query): static
+    public static function whereExists(string $query): static
     {
-        static::where($column, 'EXIST', "($query)", true);
+        static::where('', 'EXISTS', "($query)", true);
         return new static();
     }
 
     /**
-     * Defines WHERE using NOT EXIST in the SQL statement.
+     * Defines WHERE using NOT EXISTS in the SQL statement.
      *
      * @param string $query
      *                      SQL query.
      *
      * @return static
      */
-    public static function whereNotExist(string $query): static
+    public static function whereNotExists(string $query): static
     {
-        static::where($column, 'NOT EXIST', "($query)", true);
+        static::where('', 'NOT EXISTS', "($query)", true);
         return new static();
     }