diff --git a/docs/BuildingLibcxx.rst b/docs/BuildingLibcxx.rst
index 67ce03d..da72aac 100644
--- a/docs/BuildingLibcxx.rst
+++ b/docs/BuildingLibcxx.rst
@@ -292,7 +292,7 @@
 
 .. option:: LIBCXX_INCLUDE_TESTS:BOOL
 
-  **Default**: ``ON`` (or value of ``LLVM_INCLUDE_DIR``)
+  **Default**: ``ON`` (or value of ``LLVM_INCLUDE_TESTS``)
 
   Build the libc++ tests.