diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -1351,7 +1351,7 @@
   HelpText<"Set LTO mode to either 'full' or 'thin'">, Values<"thin,full">;
 def flto : Flag<["-"], "flto">, Flags<[CoreOption, CC1Option]>, Group<f_Group>,
   HelpText<"Enable LTO in 'full' mode">;
-def fno_lto : Flag<["-"], "fno-lto">, Group<f_Group>,
+def fno_lto : Flag<["-"], "fno-lto">, Flags<[CoreOption, CC1Option]>, Group<f_Group>,
   HelpText<"Disable LTO mode (default)">;
 def flto_jobs_EQ : Joined<["-"], "flto-jobs=">,
   Flags<[CC1Option]>, Group<f_Group>,
diff --git a/clang/test/Driver/cl-options.c b/clang/test/Driver/cl-options.c
--- a/clang/test/Driver/cl-options.c
+++ b/clang/test/Driver/cl-options.c
@@ -586,6 +586,9 @@
 // RUN: %clang_cl -### /c -flto -- %s 2>&1 | FileCheck -check-prefix=LTO %s
 // LTO: -flto
 
+// RUN: %clang_cl -### /c -flto -fno-lto -- %s 2>&1 | FileCheck -check-prefix=LTO-NO %s
+// LTO-NO-NOT: "-flto"
+
 // RUN: %clang_cl -### /c -flto=thin -- %s 2>&1 | FileCheck -check-prefix=LTO-THIN %s
 // LTO-THIN: -flto=thin