diff --git a/README.adoc b/README.adoc
index 2abe51d..6e8e363 100644
--- a/README.adoc
+++ b/README.adoc
@@ -27,10 +27,8 @@ Build dependencies: CMake and/or make, a C++14 compiler, pkg-config +
 Runtime dependencies: ncursesw, libacl
 
 // Working around libasciidoc's missing support for escaping it like \++
-:doubleplus: ++
-
-Unfortunately most LLVM libc++ versions have a bug that crashes 'sdn' on start.
-Use GNU libstdc{doubleplus} if you're affected.
+Unfortunately most LLVM libc{plus}{plus} versions have a bug that crashes 'sdn'
+on start.  Use GNU libstdc{plus}{plus} if you're affected.
 
  $ git clone https://git.janouch.name/p/sdn.git
  $ mkdir sdn/build