diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 63e22d618b..a051ebdc59 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -72,8 +72,8 @@ jobs:
       - name: Use MSYS2 environment and install more dependencies (Windows)
         if: runner.os == 'Windows'
         run: |
-          printf "C:\msys64\usr\bin" >> "$GITHUB_PATH"
-          printf "C:\msys64\mingw64\bin" >> "$GITHUB_PATH"
+          printf "C:\\msys64\\usr\\bin" >> "$GITHUB_PATH"
+          printf "C:\\msys64\\mingw64\\bin" >> "$GITHUB_PATH"
           /c/msys64/usr/bin/pacman -S --noconfirm nsinstall
           python3 -m pip install git+https://github.com/nodejs/gyp-next
           echo "$(python3 -m site --user-base)/bin" >> "$GITHUB_PATH"