diff --git a/Xext/xace.h b/Xext/xace.h
index 020a047d0..d3d5a84be 100644
--- a/Xext/xace.h
+++ b/Xext/xace.h
@@ -28,7 +28,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #ifdef XACE
 
 #define XACE_EXTENSION_NAME		"XAccessControlExtension"
-#define XACE_MAJOR_VERSION		1
+#define XACE_MAJOR_VERSION		2
 #define XACE_MINOR_VERSION		0
 
 #include "pixmap.h"     /* for DrawablePtr */