diff --git a/dlls/setupapi/Makefile.in b/dlls/setupapi/Makefile.in
index d1b647cd5e5..6b04a3f71ab 100644
--- a/dlls/setupapi/Makefile.in
+++ b/dlls/setupapi/Makefile.in
@@ -1,4 +1,3 @@
-EXTRADEFS = -D_SETUPAPI_
 MODULE    = setupapi.dll
 IMPORTLIB = setupapi
 IMPORTS   = uuid version advapi32 rpcrt4 kernelbase