diff --git a/configure.ac b/configure.ac
index 1ee81f90b..378ac66ef 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1512,10 +1512,10 @@ if test "x$XORG" = xyes; then
 		XORG_OS_PCI=$XORG_OS
 	fi
 	if test "x$DGA" = xauto; then
-		PKG_CHECK_MODULES(DGA, xf86dgaproto, [DGA=yes], [DGA=no])
+		PKG_CHECK_MODULES(DGA, [xf86dgaproto >= 2.0.99.1], [DGA=yes], [DGA=no])
 	fi
 	if test "x$DGA" = xyes; then
-		XORG_MODULES="$XORG_MODULES xf86dgaproto"
+		XORG_MODULES="$XORG_MODULES [xf86dgaproto >= 2.0.99.1]"
 		PKG_CHECK_MODULES(DGA, xf86dgaproto)
 		AC_DEFINE(DGA, 1, [Support DGA extension])
 		AC_DEFINE(XFreeXDGA, 1, [Build XDGA support])
diff --git a/hw/xfree86/dixmods/extmod/modinit.h b/hw/xfree86/dixmods/extmod/modinit.h
index ad53408d5..229217535 100644
--- a/hw/xfree86/dixmods/extmod/modinit.h
+++ b/hw/xfree86/dixmods/extmod/modinit.h
@@ -37,8 +37,7 @@ extern void	XFree86VidModeExtensionInit(INITARGS);
 #ifdef XFreeXDGA
 extern void XFree86DGAExtensionInit(INITARGS);
 extern void XFree86DGARegister(INITARGS);
-#define _XF86DGA_SERVER_
-#include <X11/extensions/xf86dgastr.h>
+#include <X11/extensions/xf86dgaproto.h>
 #endif
 
 #ifdef DPMSExtension
diff --git a/hw/xfree86/dixmods/extmod/xf86dga2.c b/hw/xfree86/dixmods/extmod/xf86dga2.c
index 6286659fa..7579f7d51 100644
--- a/hw/xfree86/dixmods/extmod/xf86dga2.c
+++ b/hw/xfree86/dixmods/extmod/xf86dga2.c
@@ -22,9 +22,7 @@
 #include "cursorstr.h"
 #include "scrnintstr.h"
 #include "servermd.h"
-#define _XF86DGA_SERVER_
-#include <X11/extensions/xf86dga.h>
-#include <X11/extensions/xf86dgastr.h>
+#include <X11/extensions/xf86dgaproto.h>
 #include "swaprep.h"
 #include "dgaproc.h"
 #include "xf86dgaext.h"