diff --git a/hw/bsp/family_support.cmake b/hw/bsp/family_support.cmake
index 96d6993e6..2274515e4 100644
--- a/hw/bsp/family_support.cmake
+++ b/hw/bsp/family_support.cmake
@@ -141,7 +141,7 @@ if (NOT FAMILY STREQUAL rp2040)
   endif()
 endif()
 
-if (NOT NO_WARN_RWX_SEGMENTS_SUPPORTED)
+if (NOT DEFINED NO_WARN_RWX_SEGMENTS_SUPPORTED)
   set(NO_WARN_RWX_SEGMENTS_SUPPORTED 1)
 endif()