diff --git a/dlls/wsdapi/wsdapi.spec b/dlls/wsdapi/wsdapi.spec
index fd89be73ce4..7954edea872 100644
--- a/dlls/wsdapi/wsdapi.spec
+++ b/dlls/wsdapi/wsdapi.spec
@@ -38,7 +38,7 @@
 @ stub WSDUriEncode
 @ stdcall WSDXMLAddChild(ptr ptr)
 @ stdcall WSDXMLAddSibling(ptr ptr)
-@ stdcall WSDXMLBuildAnyForSingleElement(ptr ptr ptr)
+@ stdcall WSDXMLBuildAnyForSingleElement(ptr wstr ptr)
 @ stdcall WSDXMLCleanupElement(ptr)
 @ stdcall WSDXMLCreateContext(ptr)
 @ stub WSDXMLGetNameFromBuiltinNamespace