diff --git a/ChangeLog b/ChangeLog
index 364ba929be..c71954687d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -9,6 +9,7 @@ phpMyAdmin - ChangeLog
 + issue #11438 Support JSON data type
 + issue        Editing partitions in table Structure
 - issue        Tracking does not make sense for information_schema
+- issue #11550 Regression in Find and replace
 
 4.5.2.0 (not yet released)
 
diff --git a/libraries/controllers/table/TableSearchController.php b/libraries/controllers/table/TableSearchController.php
index bc324cc903..f5b91fa783 100644
--- a/libraries/controllers/table/TableSearchController.php
+++ b/libraries/controllers/table/TableSearchController.php
@@ -622,11 +622,14 @@ class TableSearchController extends TableController
      */
     public function findAction()
     {
+        $useRegex = array_key_exists('useRegex', $_POST)
+            && $_POST['useRegex'] == 'on';
+
         $preview = $this->getReplacePreview(
             $_POST['columnIndex'],
             $_POST['find'],
             $_POST['replaceWith'],
-            $_POST['useRegex'],
+            $useRegex,
             $this->_connectionCharSet
         );
         $this->response->addJSON('preview', $preview);