diff --git a/tools/building.py b/tools/building.py
index 451a0e2e679bb..8872176feb80b 100644
--- a/tools/building.py
+++ b/tools/building.py
@@ -333,11 +333,6 @@ def lld_flags(args):
   for a in llvm_backend_args():
     args += ['-mllvm', a]
 
-  if settings.WASM_EXCEPTIONS or settings.SUPPORT_LONGJMP == 'wasm':
-    args += ['-mllvm', '-exception-model=wasm']
-  elif not settings.DISABLE_EXCEPTION_CATCHING:
-    args += ['-mllvm', '-exception-model=emscripten']
-
   return args