diff --git a/Build.md b/Build.md
index db5085c..a3ce134 100644
--- a/Build.md
+++ b/Build.md
@@ -137,11 +137,18 @@ To build **ccls** on Arch Linux with system clang+llvm: `cmake -H. -BRelease -DU
 `extra/clang` and `extra/llvm` provide `/usr/lib/{libclangAST.so,libLLVM*.a,libLLVM.so}`.
 `libclangAST.so` needs `libLLVM.so` and there would be a conflict if `libLLVM*.a` (instead of `libLLVM.so`) are linked. See https://bugs.archlinux.org/task/60512
 
+### Debian
+
+```sh
+apt install clang-7 libclang-7-dev
+cmake -H. -BRelease -DCMAKE_PREFIX_PATH=/usr/lib/llvm-7 -DLLVM_ENABLE_RTTI=on
+```
+
 ### Gentoo Linux
 
 To build **ccls** on Gentoo Linux with system Clang+LLVM: `cmake -H. -BRelease -DLLVM_ENABLE_RTTI=on`
 
-### Debian / Ubuntu
+### Ubuntu
 
 To build from source you'll need `sudo apt install zlib1g-dev ncurses-dev`