diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5dee43d..7ab8d74 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -273,6 +273,7 @@ endif()
 
 if(USE_SPDLOG)
     target_link_libraries(${PROJECT_NAME} INTERFACE spdlog::spdlog_header_only)
+    target_compile_definitions(${PROJECT_NAME} INTERFACE SPDLOG_USE_STD_FORMAT=1 SPDLOG_FMT_EXTERNAL=0)
 endif()
 
 if(BUILD_TESTS)