diff --git a/reference/cairo/cairocontext/setdash.xml b/reference/cairo/cairocontext/setdash.xml
index 52004ccb7f..d9cb6dd881 100644
--- a/reference/cairo/cairocontext/setdash.xml
+++ b/reference/cairo/cairocontext/setdash.xml
@@ -14,14 +14,14 @@
    <methodsynopsis>
    <modifier>public</modifier> <type>void</type><methodname>CairoContext::setDash</methodname>
    <methodparam><type>string</type><parameter>dashes</parameter></methodparam>
-   <methodparam choice="opt"><type>string</type><parameter>offset</parameter></methodparam>
+   <methodparam choice="opt"><type>float</type><parameter>offset</parameter></methodparam>
    </methodsynopsis>
   <para>&style.procedural;:</para>
   <methodsynopsis>
    <type>void</type><methodname>cairo_set_dash</methodname>
    <methodparam><type>CairoContext</type><parameter>context</parameter></methodparam>
    <methodparam><type>array</type><parameter>dashes</parameter></methodparam>
-   <methodparam choice="opt"><type>string</type><parameter>offset</parameter></methodparam>
+   <methodparam choice="opt"><type>float</type><parameter>offset</parameter></methodparam>
   </methodsynopsis>
   <para>
    Description here.