diff -Nur tigervnc-49d0629dd87c0eb695d72dec7481e9169f55ae9e.orig/unix/xserver/hw/vnc/xorg-version.h tigervnc-49d0629dd87c0eb695d72dec7481e9169f55ae9e/unix/xserver/hw/vnc/xorg-version.h
--- tigervnc-49d0629dd87c0eb695d72dec7481e9169f55ae9e.orig/unix/xserver/hw/vnc/xorg-version.h	2015-03-01 12:58:35.000000000 -0700
+++ tigervnc-49d0629dd87c0eb695d72dec7481e9169f55ae9e/unix/xserver/hw/vnc/xorg-version.h	2015-08-04 09:46:14.796336147 -0600
@@ -48,8 +48,10 @@
 #define XORG 116
 #elif XORG_VERSION_CURRENT < ((1 * 10000000) + (17 * 100000) + (99 * 1000))
 #define XORG 117
+#elif XORG_VERSION_CURRENT < ((1 * 10000000) + (18 * 100000) + (99 * 1000))
+#define XORG 118
 #else
-#error "X.Org newer than 1.17 is not supported"
+#error "X.Org newer than 1.18 is not supported"
 #endif

 #endif