diff --git a/pico_keys_sdk_import.cmake b/pico_keys_sdk_import.cmake
index 60664e2..00f5ddb 100644
--- a/pico_keys_sdk_import.cmake
+++ b/pico_keys_sdk_import.cmake
@@ -227,6 +227,7 @@ endif()
 if (ENABLE_EMULATION)
     if(APPLE)
         set(CMAKE_OSX_SYSROOT "/Library/Developer/CommandLineTools//SDKs/MacOSX11.3.sdk")
+        add_definitions("-Wno-deprecated-declarations")
     elseif(MSVC)
         set(SOURCES ${SOURCES}
             ${CMAKE_CURRENT_LIST_DIR}/src/fs/mman.c