diff --git a/cmake/CompileDefinitions.cmake b/cmake/CompileDefinitions.cmake
index cefafdeb7..0acbe2fa5 100644
--- a/cmake/CompileDefinitions.cmake
+++ b/cmake/CompileDefinitions.cmake
@@ -11,6 +11,7 @@ endfunction()
 
 if(${CUSTOMIZE_BUILD})
     target_compile_definitions("raylib" PRIVATE EXTERNAL_CONFIG_FLAGS)
+    define_if("raylib" USE_AUDIO)
 
     foreach(FLAG IN LISTS CONFIG_HEADER_FLAGS)
         string(REGEX MATCH "([^=]+)=(.+)" _ ${FLAG})