diff --git a/Build.md b/Build.md
index e09f3a1..d846d4b 100644
--- a/Build.md
+++ b/Build.md
@@ -296,7 +296,7 @@ ninja -C Release
 git clone https://github.com/llvm/llvm-project.git
 cd llvm-project
 
-cmake -Hllvm -BRelease -G Ninja -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD=X86
+cmake -Hllvm -BRelease -G Ninja -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD=X86 -DLLVM_ENABLE_PROJECTS=clang
 ninja -C Release clangFormat clangFrontendTool clangIndex clangTooling clang
 # built Release/bin/clang
 ```
@@ -345,7 +345,7 @@ Similar to the instructions to build Clang+LLVM from the git monorepo:
 # Download "LLVM source code" and rename the extracted directory to llvm
 # Download "Clang source code" and rename the extracted directory to llvm/tools/clang
 cd llvm
-cmake -H. -BRelease -G Ninja -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD=X86
+cmake -H. -BRelease -G Ninja -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD=X86 -DLLVM_ENABLE_PROJECTS=clang
 ninja -C Release clangFormat clangFrontendTool clangIndex clangTooling clang
 # built Release/bin/clang
 ```