diff --git a/rostests/winetests/rpcrt4/rpcrt4.rbuild b/rostests/winetests/rpcrt4/rpcrt4.rbuild
index c4cf8c03941..424f0201328 100644
--- a/rostests/winetests/rpcrt4/rpcrt4.rbuild
+++ b/rostests/winetests/rpcrt4/rpcrt4.rbuild
@@ -2,11 +2,9 @@
 <!DOCTYPE module SYSTEM "../../../tools/rbuild/project.dtd">
 <group>
 	<module name="rpcrt4_winetest_server" type="rpcserver" allowwarnings="true">
-		<define name="__ROS_LONG64__" />
 		<file>server.idl</file>
 	</module>
-	<module name="rpcrt4_winetest_client" type="rpcclient">
-		<define name="__ROS_LONG64__" />
+	<module name="rpcrt4_winetest_client" type="rpcclient" allowwarnings="true">
 		<file>server.idl</file>
 	</module>
 	<module name="rpcrt4_winetest" type="win32cui" installbase="bin" installname="rpcrt4_winetest.exe" allowwarnings="true">