diff --git a/src/WPDO.php b/src/WPDO.php
index 15bb768..16aa407 100644
--- a/src/WPDO.php
+++ b/src/WPDO.php
@@ -195,20 +195,23 @@ class WPDO {
             
         }
         
-        //$final_fields=implode('`, `', $fields);
         $final_fields=[];
         
         foreach($fields as $field) {
             
-            
+            $final_fields[]='`'.$field.'`=?';
             
         }
         
-        $query='update '.$this->table->name.' SET ';
+        $str_fields=implode(' AND ', $final_fields);
+        
+        $query='update '.$this->table->name.' SET '.$str_fields.' '.$where_sql;
         //echo $query;
+        $final_values=array_merge($values_update, $values);
+        
         $this->sth=$this->conn->prepare($query);
             
-        return $this->sth->execute($values);
+        return $this->sth->execute($final_values);
         
     }
     
diff --git a/tests/WPDOTest.php b/tests/WPDOTest.php
index 9d11d26..c1c9b67 100644
--- a/tests/WPDOTest.php
+++ b/tests/WPDOTest.php
@@ -78,6 +78,24 @@ final class WPDOTest extends TestCase {
         
     }
     
+    /**
+	* @depends testInsert
+	*/
+    
+    public function testUpdate() {
+        
+        global $pdo;
+        
+        $this->assertTrue($pdo->update(['name'], ['first_updated'], 'WHERE name=?', ['first']));
+        
+        $this->assertTrue($pdo->select(['name'], 'WHERE name=? AND type=?', ['first_updated', 1]));
+        
+        $arr_result=$pdo->sth->fetchAll();
+        
+        $this->assertEquals([['name' => 'first_updated', 0 => 'first_updated']], $arr_result);
+        
+    }
+    
     /**
 	* @depends testCreateTable
 	*/