diff --git a/configure.ac b/configure.ac
index d92e22a..6861485 100644
--- a/configure.ac
+++ b/configure.ac
@@ -61,7 +61,7 @@ XORG_DRIVER_CHECK_EXT(XV, videoproto)
 
 if test "x$DGA" = xyes; then
 	XORG_DRIVER_CHECK_EXT(XFreeXDGA, xf86dgaproto)
-	AC_DEFINE(XFreeXDGA, 1, [Support DGA extension])
+	AC_DEFINE(USE_DGA, 1, [Support DGA extension])
 fi
 AC_SUBST([DGA])
 AM_CONDITIONAL([DGA], [test "x$DGA" = xyes])
diff --git a/src/dummy_driver.c b/src/dummy_driver.c
index 041ca96..6533b27 100644
--- a/src/dummy_driver.c
+++ b/src/dummy_driver.c
@@ -45,7 +45,7 @@
 #include <X11/Xproto.h>
 #include "scrnintstr.h"
 #include "servermd.h"
-#ifdef XFreeXDGA
+#ifdef USE_DGA
 #define _XF86DGA_SERVER_
 #include <X11/extensions/xf86dgaproto.h>
 #endif
@@ -592,7 +592,7 @@ DUMMYScreenInit(int scrnIndex, ScreenPtr pScreen, int argc, char **argv)
 
     xf86SetBlackWhitePixels(pScreen);
 
-#ifdef XFreeXDGA
+#ifdef USE_DGA
     DUMMYDGAInit(pScreen);
 #endif