diff --git a/Build.md b/Build.md
index b8555ac..62d57a1 100644
--- a/Build.md
+++ b/Build.md
@@ -277,7 +277,7 @@ ninja -C Release clangFormat clangFrontendTool clangIndex clangTooling clang
 
 # Download ccls
 cd ccls
-cmake -H. -BRelease -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER=clang-cl -DCMAKE_PREFIX_PATH="D:/llvm/Release"
+cmake -H. -BRelease -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER=clang-cl -DCMAKE_C_COMPILER=clang-c -DCMAKE_PREFIX_PATH="D:/llvm-project/Release"
 ninja -C Release
 ```