diff --git a/lld/lib/Driver/WinLinkOptions.td b/lld/lib/Driver/WinLinkOptions.td
index 8d6a934dc869..0264643861d8 100644
--- a/lld/lib/Driver/WinLinkOptions.td
+++ b/lld/lib/Driver/WinLinkOptions.td
@@ -92,6 +92,7 @@ def verbose : F<"verbose">;
 
 def delay : QF<"delay">;
 def delayload : QF<"delayload">;
+def disallowlib : QF<"disallowlib">;
 def errorreport : QF<"errorreport">;
 def pdb : QF<"pdb">;
 def pdbaltpath : QF<"pdbaltpath">;
diff --git a/lld/unittests/DriverTests/WinLinkDriverTest.cpp b/lld/unittests/DriverTests/WinLinkDriverTest.cpp
index 01b34b64c069..c4403a7d8ba8 100644
--- a/lld/unittests/DriverTests/WinLinkDriverTest.cpp
+++ b/lld/unittests/DriverTests/WinLinkDriverTest.cpp
@@ -463,9 +463,9 @@ TEST_F(WinLinkParserTest, Ignore) {
   // compatibility with link.exe.
   EXPECT_TRUE(parse("link.exe", "/nologo", "/errorreport:prompt",
                     "/incremental", "/incremental:no", "/delay:unload",
-                    "/delayload:user32", "/pdb:foo", "/pdbaltpath:bar",
-                    "/verbose", "/verbose:icf", "/wx", "/wx:no", "a.obj",
-                    nullptr));
+                    "/disallowlib:foo", "/delayload:user32", "/pdb:foo",
+                    "/pdbaltpath:bar", "/verbose", "/verbose:icf", "/wx",
+                    "/wx:no", "a.obj", nullptr));
   EXPECT_EQ("", errorMessage());
   EXPECT_EQ(1, inputFileCount());
   EXPECT_EQ("a.obj", inputFile(0));