--- old/common/autoconf/help.m4	2016-11-30 13:49:07.000000000 +0300
+++ new/common/autoconf/help.m4	2016-11-30 13:49:07.000000000 +0300
@@ -116,7 +116,7 @@
     ffi)
       PKGHANDLER_COMMAND="sudo apt-get install libffi-dev" ;;
     x11)
-      PKGHANDLER_COMMAND="sudo apt-get install libX11-dev libxext-dev libxrender-dev libxtst-dev libxt-dev" ;;
+      PKGHANDLER_COMMAND="sudo apt-get install libx11-dev libxext-dev libxrender-dev libxtst-dev libxt-dev" ;;
     ccache)
       PKGHANDLER_COMMAND="sudo apt-get install ccache" ;;
     dtrace)