diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2599cb691..dfda28c48 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -451,7 +451,7 @@ endif()
 #       feel free to update the Makefile for your architecture and send a pull request or issue
 message(STATUS "CMAKE_SYSTEM_PROCESSOR: ${CMAKE_SYSTEM_PROCESSOR}")
 if (MSVC)
-  string( TOLOWER "${CMAKE_GENERATOR_PLATFORM}" CMAKE_GENERATOR_PLATFORM_LWR)
+  string(TOLOWER "${CMAKE_GENERATOR_PLATFORM}" CMAKE_GENERATOR_PLATFORM_LWR)
   message(STATUS "CMAKE_GENERATOR_PLATFORM: ${CMAKE_GENERATOR_PLATFORM}")
 else ()
   set(CMAKE_GENERATOR_PLATFORM_LWR "")