diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8fc74a7787bdf6b6f23c816893f1eaab4154bf12..bdfac6fe2ce5a2acd72b53a22bf6bf397b099b52 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Version 1.92 (not yet released)
 
+* Fixed issue #136: getSort also NULL as return
+
 # Version 1.91
 
 * Fixed issue with aggregated contribution data source.
diff --git a/CRM/DataprocessorSearch/Form/AbstractSearch.php b/CRM/DataprocessorSearch/Form/AbstractSearch.php
index b957a77b308575324e9c261303c01e46b45bda26..f372201e7e4d820af30ea225e784b45e5a06416f 100644
--- a/CRM/DataprocessorSearch/Form/AbstractSearch.php
+++ b/CRM/DataprocessorSearch/Form/AbstractSearch.php
@@ -143,9 +143,9 @@ abstract class CRM_DataprocessorSearch_Form_AbstractSearch extends CRM_Dataproce
   }
 
   /**
-   * @return CRM_Utils_Sort
+   * @return CRM_Utils_Sort|NULL
    */
-  public function getSort(): CRM_Utils_Sort {
+  public function getSort(): ?CRM_Utils_Sort {
     return $this->sort;
   }
 
diff --git a/info.xml b/info.xml
index 1d2c3e80dfa2830e6ccb4abdf16f6fee56108b17..cfda31e7c7c02c0db86a802d9bb8cf584ab11c9e 100644
--- a/info.xml
+++ b/info.xml
@@ -14,7 +14,7 @@
     <url desc="Documentation">https://lab.civicrm.org/extensions/dataprocessor/blob/master/README.md</url>
     <url desc="Licensing">http://www.gnu.org/licenses/agpl-3.0.html</url>
   </urls>
-  <releaseDate>2023-10-16</releaseDate>
+  <releaseDate>2023-10-17</releaseDate>
   <version>1.92-dev</version>
   <develStage>stable</develStage>
   <compatibility>