diff --git a/Install.md b/Install.md
index c208057..0cad9bc 100644
--- a/Install.md
+++ b/Install.md
@@ -37,7 +37,7 @@ subdirectory of Clang resource directory. The path is derived from `clang
 -print-resource-dir` at CMake configure time.
 
 The location is hard-coded in the `ccls` executable
-(`-DDEFAULT_RESOURCE_DIRECTORY=` when building ccls). If you want to install
+(`-DCLANG_RESOURCE_DIR=` when building ccls). If you want to install
 **ccls** and delete the build directory, you need to copy the contents of the
 resource directory before building ccls.