diff --git a/tools/building.py b/tools/building.py
index a6945b939cdb5..ffc77781f965b 100644
--- a/tools/building.py
+++ b/tools/building.py
@@ -326,11 +326,6 @@ def lld_flags(args, linker_inputs=None):
 
   if settings.WASM_EXCEPTIONS:
     args += ['-mllvm', '-wasm-enable-eh']
-  if settings.WASM_EXCEPTIONS or settings.SUPPORT_LONGJMP == 'wasm':
-    if settings.WASM_LEGACY_EXCEPTIONS:
-      args += ['-mllvm', '-wasm-use-legacy-eh']
-    else:
-      args += ['-mllvm', '-wasm-use-legacy-eh=0']
   if settings.WASM_EXCEPTIONS or settings.SUPPORT_LONGJMP == 'wasm':
     args += ['-mllvm', '-exception-model=wasm']