diff --git a/library/server/wsf/wsf.ecf b/library/server/wsf/wsf.ecf
index db6b6daf..98a028c9 100644
--- a/library/server/wsf/wsf.ecf
+++ b/library/server/wsf/wsf.ecf
@@ -7,7 +7,7 @@
 			<exclude>/EIFGENs$</exclude>
 			<exclude>/.svn$</exclude>
 		</file_rule>
-		<option warning="true" full_class_checking="true" void_safety="none" syntax="standard">
+		<option warning="true" full_class_checking="true" void_safety="none" syntax="provisional">
 		</option>
 		<library name="base" location="$ISE_LIBRARY/library/base/base.ecf"/>
 		<library name="ewsgi" location="..\ewsgi\ewsgi.ecf"/>