diff --git a/clang/lib/Driver/ToolChains/MSVC.cpp b/clang/lib/Driver/ToolChains/MSVC.cpp
--- a/clang/lib/Driver/ToolChains/MSVC.cpp
+++ b/clang/lib/Driver/ToolChains/MSVC.cpp
@@ -963,7 +963,7 @@
     Action::OffloadKind DeviceOffloadKind) const {
   // MSVC STL kindly allows removing all usages of typeid by defining
   // _HAS_STATIC_RTTI to 0. Do so, when compiling with -fno-rtti
-  if (DriverArgs.hasArg(options::OPT_fno_rtti, options::OPT_frtti,
-                        /*Default=*/false))
+  if (DriverArgs.hasFlag(options::OPT_fno_rtti, options::OPT_frtti,
+                         /*Default=*/false))
     CC1Args.push_back("-D_HAS_STATIC_RTTI=0");
 }
diff --git a/clang/test/Driver/msvc-static-rtti.cpp b/clang/test/Driver/msvc-static-rtti.cpp
--- a/clang/test/Driver/msvc-static-rtti.cpp
+++ b/clang/test/Driver/msvc-static-rtti.cpp
@@ -1,5 +1,5 @@
-// RUN: %clang -target x86_64-pc-windows-msvc -fno-rtti -### %s 2>&1 | FileCheck %s -check-prefix STATIC-RTTI-DEF
-// RUN: %clang -target x86_64-pc-windows-msvc -frtti -### %s 2>&1 | FileCheck %s -check-prefix STATIC-RTTI-DEF-NOT
+// RUN: %clang -target x86_64-pc-windows-msvc -fno-rtti -### %s 2>&1 | FileCheck %s -check-prefix NO-RTTI
+// RUN: %clang -target x86_64-pc-windows-msvc -frtti -### %s 2>&1 | FileCheck %s -check-prefix RTTI
 
-// STATIC-RTTI-DEF: -D_HAS_STATIC_RTTI=0
-// STATIC-RTTI-DEF-NOT: -D_HAS_STATIC_RTTI=0
+// RTTI-NOT: -D_HAS_STATIC_RTTI=0
+// NO-RTTI: -D_HAS_STATIC_RTTI=0