diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4aa10a40e..5e4acbfe2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -86,3 +86,5 @@ Master branch
 
 - fix errors in pagination
 - fix search: usage of parenthesis
+- add DQL function REPLACE for replacing in strings: "REPLACE(string, 'from', 'to')"
+
diff --git a/DependencyInjection/ChillMainExtension.php b/DependencyInjection/ChillMainExtension.php
index 7b4b0243a..f4ec46fe8 100644
--- a/DependencyInjection/ChillMainExtension.php
+++ b/DependencyInjection/ChillMainExtension.php
@@ -32,6 +32,7 @@ use Chill\MainBundle\Doctrine\DQL\JsonAggregate;
 use Chill\MainBundle\Doctrine\DQL\JsonbExistsInArray;
 use Chill\MainBundle\Doctrine\DQL\Similarity;
 use Chill\MainBundle\Doctrine\DQL\OverlapsI;
+use Chill\MainBundle\Doctrine\DQL\Replace;
 
 /**
  * This class load config for chillMainExtension.
@@ -159,7 +160,8 @@ class ChillMainExtension extends Extension implements PrependExtensionInterface,
                  'string_functions' => array(
                     'unaccent' => Unaccent::class,
                     'GET_JSON_FIELD_BY_KEY' => GetJsonFieldByKey::class,
-                    'AGGREGATE' => JsonAggregate::class
+                    'AGGREGATE' => JsonAggregate::class,
+                    'REPLACE' => Replace::class,
                  ),
                  'numeric_functions' => [
                     'JSONB_EXISTS_IN_ARRAY' => JsonbExistsInArray::class,
diff --git a/Doctrine/DQL/Replace.php b/Doctrine/DQL/Replace.php
new file mode 100644
index 000000000..6d30ec7d9
--- /dev/null
+++ b/Doctrine/DQL/Replace.php
@@ -0,0 +1,64 @@
+<?php
+/*
+ * Chill is a software for social workers
+ * Copyright (C) 2019 Champs-Libres Coopérative <info@champs-libres.coop>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+namespace Chill\MainBundle\Doctrine\DQL;
+
+use Doctrine\ORM\Query\AST\Functions\FunctionNode;
+use Doctrine\ORM\Query\Lexer;
+
+/**
+ * 
+ *
+ */
+class Replace extends FunctionNode
+{
+    protected $string;
+    
+    protected $from;
+    
+    protected $to;
+    
+    public function getSql(\Doctrine\ORM\Query\SqlWalker $sqlWalker): string
+    {
+        return 'REPLACE('.
+            $this->string->dispatch($sqlWalker).
+            ', '.
+            $this->from->dispatch($sqlWalker).
+            ', '.
+            $this->to->dispatch($sqlWalker).
+            ')';
+    }
+
+    public function parse(\Doctrine\ORM\Query\Parser $parser): void
+    {
+        $parser->match(Lexer::T_IDENTIFIER);
+        $parser->match(Lexer::T_OPEN_PARENTHESIS);
+        
+        $this->string = $parser->StringPrimary();
+        
+        $parser->match(Lexer::T_COMMA);
+        
+        $this->from = $parser->StringPrimary();
+        
+        $parser->match(Lexer::T_COMMA);
+        
+        $this->to = $parser->StringPrimary();
+        
+        $parser->match(Lexer::T_CLOSE_PARENTHESIS);
+    }
+}