diff --git a/lld/test/wasm/lto/new-pass-manager.ll b/lld/test/wasm/lto/new-pass-manager.ll
--- a/lld/test/wasm/lto/new-pass-manager.ll
+++ b/lld/test/wasm/lto/new-pass-manager.ll
@@ -1,6 +1,6 @@
 ; RUN: llvm-as -o %t.bc %s
-; RUN: wasm-ld --lto-new-pass-manager --lto-debug-pass-manager -o /dev/null %t.bc 2>&1 | FileCheck %s
-; RUN: wasm-ld --lto-new-pass-manager --lto-debug-pass-manager --no-lto-new-pass-manager -o /dev/null %t.bc 2>&1 | FileCheck %s --allow-empty --check-prefix=LPM
+; RUN: wasm-ld --no-lto-legacy-pass-manager --lto-debug-pass-manager -o /dev/null %t.bc 2>&1 | FileCheck %s
+; RUN: wasm-ld --no-lto-legacy-pass-manager --lto-debug-pass-manager --lto-legacy-pass-manager -o /dev/null %t.bc 2>&1 | FileCheck %s --allow-empty --check-prefix=LPM
 
 ; CHECK: Starting llvm::Module pass manager run
 ; CHECK: Finished llvm::Module pass manager run
diff --git a/lld/test/wasm/lto/verify-invalid.ll b/lld/test/wasm/lto/verify-invalid.ll
--- a/lld/test/wasm/lto/verify-invalid.ll
+++ b/lld/test/wasm/lto/verify-invalid.ll
@@ -1,11 +1,11 @@
 ; RUN: llvm-as %s -o %t.o
-; RUN: wasm-ld %t.o -o %t2 --no-lto-new-pass-manager -mllvm -debug-pass=Arguments \
+; RUN: wasm-ld %t.o -o %t2 --lto-legacy-pass-manager -mllvm -debug-pass=Arguments \
 ; RUN:   2>&1 | FileCheck -check-prefix=DEFAULT-LPM %s
-; RUN: wasm-ld %t.o -o %t2 --no-lto-new-pass-manager -mllvm -debug-pass=Arguments \
+; RUN: wasm-ld %t.o -o %t2 --lto-legacy-pass-manager -mllvm -debug-pass=Arguments \
 ; RUN:   -disable-verify 2>&1 | FileCheck -check-prefix=DISABLE-LPM %s
-; RUN: wasm-ld %t.o -o %t2 --lto-new-pass-manager --lto-debug-pass-manager \
+; RUN: wasm-ld %t.o -o %t2 --no-lto-legacy-pass-manager --lto-debug-pass-manager \
 ; RUN:   2>&1 | FileCheck -check-prefix=DEFAULT-NPM %s
-; RUN: wasm-ld %t.o -o %t2 --lto-new-pass-manager --lto-debug-pass-manager \
+; RUN: wasm-ld %t.o -o %t2 --no-lto-legacy-pass-manager --lto-debug-pass-manager \
 ; RUN:   -disable-verify 2>&1 | FileCheck -check-prefix=DISABLE-NPM %s
 
 target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
diff --git a/lld/wasm/Driver.cpp b/lld/wasm/Driver.cpp
--- a/lld/wasm/Driver.cpp
+++ b/lld/wasm/Driver.cpp
@@ -382,7 +382,7 @@
   config->ltoo = args::getInteger(args, OPT_lto_O, 2);
   config->ltoPartitions = args::getInteger(args, OPT_lto_partitions, 1);
   config->ltoNewPassManager =
-      args.hasFlag(OPT_lto_new_pass_manager, OPT_no_lto_new_pass_manager,
+      args.hasFlag(OPT_no_lto_legacy_pass_manager, OPT_lto_legacy_pass_manager,
                    LLVM_ENABLE_NEW_PASS_MANAGER);
   config->ltoDebugPassManager = args.hasArg(OPT_lto_debug_pass_manager);
   config->mapFile = args.getLastArgValue(OPT_Map);
diff --git a/lld/wasm/Options.td b/lld/wasm/Options.td
--- a/lld/wasm/Options.td
+++ b/lld/wasm/Options.td
@@ -220,7 +220,7 @@
 defm thinlto_cache_policy: Eq<"thinlto-cache-policy", "Pruning policy for the ThinLTO cache">;
 def thinlto_jobs: J<"thinlto-jobs=">,
   HelpText<"Number of ThinLTO jobs. Default to --threads=">;
-defm lto_new_pass_manager: BB<"lto-new-pass-manager", "Use new pass manager", "Use legacy pass manager">;
+defm lto_legacy_pass_manager: BB<"lto-legacy-pass-manager", "Use legacy pass manager", "Use new pass manager">;
 def lto_debug_pass_manager: F<"lto-debug-pass-manager">,
   HelpText<"Debug new pass manager">;