diff --git a/cmake/compile_flags.cmake b/cmake/compile_flags.cmake
index fbd1416..30b2e8a 100644
--- a/cmake/compile_flags.cmake
+++ b/cmake/compile_flags.cmake
@@ -2,6 +2,7 @@ function(adaptive_brightness_add_compile_flags target)
     if(MSVC)
         target_compile_options(${target} PUBLIC /MP)
     endif()
+    target_compile_definitions(${target} PUBLIC $<$<NOT:$<CONFIG:Debug>>:QT_NO_DEBUG_OUTPUT>)
 endfunction()
 
 function(adaptive_brightness_enable_warnings target)