diff --git a/programs/rpcss/Makefile.in b/programs/rpcss/Makefile.in
index 40bd188a536..b1d0c3f9813 100644
--- a/programs/rpcss/Makefile.in
+++ b/programs/rpcss/Makefile.in
@@ -1,4 +1,3 @@
-EXTRADEFS = -D__WINESRC__
 MODULE    = rpcss.exe
 APPMODE   = -mconsole
 IMPORTS   = rpcrt4