diff --git a/README.md b/README.md
index b850a72..cfa2658 100644
--- a/README.md
+++ b/README.md
@@ -86,6 +86,9 @@ CentOS/Fedora/RHEL: `# dnf install cmake ninja-build llvm-devel`
 
 Arch: `# pacman -S cmake ninja llvm-libs`
 
+On platforms that install ninja to `/usr/bin/ninja` instead of `/usr/bin/ninja-build`, CMake may fail.
+In that case, symlink ninja-build to ninja (`ln -s /usr/bin/ninja /usr/bin/ninja-build`).
+
 Then, you can either use the quick-build script or do a manual build.
 
 Quick build: `./build.sh`