diff --git a/src/opnsense/mvc/app/controllers/OPNsense/Diagnostics/Api/LogController.php b/src/opnsense/mvc/app/controllers/OPNsense/Diagnostics/Api/LogController.php
index a5583e2b0..9d636a866 100644
--- a/src/opnsense/mvc/app/controllers/OPNsense/Diagnostics/Api/LogController.php
+++ b/src/opnsense/mvc/app/controllers/OPNsense/Diagnostics/Api/LogController.php
@@ -47,7 +47,7 @@ class LogController extends ApiControllerBase
         // create filter to sanitize input data
         $filter = new Filter([
             'query' => function ($value) {
-                return preg_replace("/[^0-9,a-z,A-Z, ,*,\-,_,.,\#]/", "", $value);
+                return preg_replace("/[^0-9,a-z,A-Z, ,*,\-,_,.,\#,\:]/", "", $value);
             }
         ]);