diff --git a/Modules/FindX11.cmake b/Modules/FindX11.cmake
index 531c02663..c084df063 100644
--- a/Modules/FindX11.cmake
+++ b/Modules/FindX11.cmake
@@ -6,6 +6,7 @@
 #
 # and also the following more fine grained variables:
 # Include paths: X11_ICE_INCLUDE_PATH,          X11_ICE_LIB,        X11_ICE_FOUND
+#                X11_X11_INCLUDE_PATH,          X11_X11_LIB
 #                X11_Xaccessrules_INCLUDE_PATH,                     X11_Xaccess_FOUND
 #                X11_Xaccessstr_INCLUDE_PATH,                       X11_Xaccess_FOUND
 #                X11_Xau_INCLUDE_PATH,          X11_Xau_LIB,        X11_Xau_FOUND