diff --git a/admin/environment.xml b/admin/environment.xml
index 24cffd1777e..5f8faf5c043 100644
--- a/admin/environment.xml
+++ b/admin/environment.xml
@@ -27,7 +27,7 @@
           <ON_CHECK message="iconvrecommended" />
         </FEEDBACK>
       </PHP_EXTENSION>
-      <PHP_EXTENSION name="mbstring0" level="optional">
+      <PHP_EXTENSION name="mbstring" level="optional">
         <FEEDBACK>
           <ON_CHECK message="mbstringrecommended" />
         </FEEDBACK>