diff --git a/wcfsetup/install/files/lib/system/template/TemplateScriptingCompiler.class.php b/wcfsetup/install/files/lib/system/template/TemplateScriptingCompiler.class.php
index 8510cb545e8..0b8a0fb948c 100644
--- a/wcfsetup/install/files/lib/system/template/TemplateScriptingCompiler.class.php
+++ b/wcfsetup/install/files/lib/system/template/TemplateScriptingCompiler.class.php
@@ -74,6 +74,7 @@ class TemplateScriptingCompiler
         'ltrim',
         'max',
         'mb_strlen',
+        'mb_strpos',
         'mb_strtolower',
         'mb_strtoupper',
         'mb_substr',