diff --git a/CMakeLists.txt b/CMakeLists.txt
index 562c6e4ba..b34f72e09 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -114,7 +114,7 @@ target_include_directories(
         PRIVATE "${CMAKE_CURRENT_LIST_DIR}/include"
 )
 
-if(NOT CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
+if(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
     add_subdirectory(externals/fmt)
     set(FMT_INCLUDE_DIR "${CMAKE_SOURCE_DIR}/externals/fmt/include")
     target_link_libraries(${LIBRARY_NAME} PRIVATE fmt)