diff --git a/.github/workflows/ci_windows.yaml b/.github/workflows/ci_windows.yaml
index 7a9b0910d..a5e06b1a2 100644
--- a/.github/workflows/ci_windows.yaml
+++ b/.github/workflows/ci_windows.yaml
@@ -121,7 +121,7 @@ jobs:
             ${{ env.libtorrent_path }}
           cd ${{ env.libtorrent_path }}
           $env:CXXFLAGS+=" /guard:cf"
-          $env:LDFLAGS+=" /guard:cf"
+          $env:LDFLAGS+=" /GUARD:CF"
           cmake `
             -B build `
             -G "Ninja" `
diff --git a/cmake/Modules/CommonConfig.cmake b/cmake/Modules/CommonConfig.cmake
index 85535313a..32aebd62e 100644
--- a/cmake/Modules/CommonConfig.cmake
+++ b/cmake/Modules/CommonConfig.cmake
@@ -89,7 +89,7 @@ if (MSVC)
         /Zc:__cplusplus
     )
     target_link_options(qbt_common_cfg INTERFACE
-        /guard:cf
+        /GUARD:CF
         $<$<NOT:$<CONFIG:Debug>>:/OPT:REF /OPT:ICF>
         # suppress linking warning due to /INCREMENTAL and /OPT:ICF being both ON
         $<$<CONFIG:RelWithDebInfo>:/INCREMENTAL:NO>