diff --git a/reference/intl/grapheme/grapheme-substr.xml b/reference/intl/grapheme/grapheme-substr.xml
index 16e043dead..317ee99976 100644
--- a/reference/intl/grapheme/grapheme-substr.xml
+++ b/reference/intl/grapheme/grapheme-substr.xml
@@ -9,7 +9,7 @@
   &reftitle.description;
   <para>&style.procedural;</para>
   <methodsynopsis>
-   <type>int</type><methodname>grapheme_substr</methodname>
+   <type>string</type><methodname>grapheme_substr</methodname>
    <methodparam><type>string</type><parameter>string</parameter></methodparam>
    <methodparam><type>int</type><parameter>start</parameter></methodparam>
    <methodparam choice="opt"><type>int</type><parameter>length</parameter></methodparam>