diff --git a/llvm/cmake/config-ix.cmake b/llvm/cmake/config-ix.cmake
index 9a8842cf6e56..1393ddb1d4a3 100644
--- a/llvm/cmake/config-ix.cmake
+++ b/llvm/cmake/config-ix.cmake
@@ -565,7 +565,7 @@ if(CMAKE_GENERATOR STREQUAL "Ninja")
 endif()
 
 if(CMAKE_GENERATOR STREQUAL "Ninja" AND
-    NINJA_VERSION VERSION_GREATER_EQUAL "1.9.0" AND
+    "${NINJA_VERSION}" VERSION_GREATER_EQUAL "1.9.0" AND
     CMAKE_HOST_APPLE AND CMAKE_HOST_SYSTEM_VERSION VERSION_GREATER "15.6.0")
   set(LLVM_TOUCH_STATIC_LIBRARIES ON)
 endif()