diff --git a/Build.md b/Build.md
index 6a961d3..a2e8f53 100644
--- a/Build.md
+++ b/Build.md
@@ -72,15 +72,6 @@ for your system, as well as methods of obtaining and locating Clang+LLVM.
 
   Set the install location.  See [[Install]] for more details.
 
-* `-DCLANG_USE_BUNDLED_LIBC++=(ON|OFF)`
-
-  Default: **OFF**
-
-  Clang provides libc++ libraries.  This option forces **ccls** to link with
-  these libraries.  This can be used on FreeBSD, but likely won't work on
-  Linux due to conflict of libstdc++ (linked by clang+llvm libraries) and
-  libc++.
-
 * `-DCMAKE_PREFIX_PATH=<path>`
 
   Specify paths where CMake can locate Clang/LLVM headers and libraries.
@@ -216,9 +207,8 @@ See https://github.com/MaskRay/ccls/issues/191#issuecomment-453809905 for detail
 ### FreeBSD
 
 * [devel/ccls](https://www.freshports.org/devel/ccls)
-* With `devel/llvm70` add CMake flags `-DCMAKE_PREFIX_PATH=/usr/local/llvm70`
-* To use the releases.llvm.org prebuilt archive and its libc++ add CMake flag
-  `-DCLANG_USE_BUNDLED_LIBC++=on`
+* With `devel/llvm80` add CMake flags `-DCMAKE_PREFIX_PATH=/usr/local/llvm80`
+* Use the releases.llvm.org prebuilt archive.
 
 ### GuixSD (0.16)