diff --git a/modules/raycast/SCsub b/modules/raycast/SCsub
index 13cbd4f3933..dcade4b520c 100644
--- a/modules/raycast/SCsub
+++ b/modules/raycast/SCsub
@@ -90,7 +90,7 @@ if env["builtin_embree"]:
 
     if not env.msvc:
         # Flags synced with upstream gnu.cmake.
-        if env["arch"] == "arm64" and env["platform"] == "x11":
+        if env["arch"] == "arm64" and env["platform"] == "x11" and not env["use_llvm"]:
             env_thirdparty.Append(CXXFLAGS=["-flax-vector-conversions"])
 
         env_thirdparty.Append(