diff --git a/miext/rootless/Makefile.am b/miext/rootless/Makefile.am
index f09300d5c..c97bebebe 100644
--- a/miext/rootless/Makefile.am
+++ b/miext/rootless/Makefile.am
@@ -1,5 +1,4 @@
 AM_CFLAGS = $(DIX_CFLAGS) $(XSERVER_CFLAGS)
-AM_CPPFLAGS = -I$(top_srcdir)/hw/xfree86/os-support
 
 noinst_LTLIBRARIES = librootless.la
 librootless_la_SOURCES = \