diff --git a/.github/workflows/build_windows.yml b/.github/workflows/build_windows.yml
index 9beeb2281..00101bda8 100644
--- a/.github/workflows/build_windows.yml
+++ b/.github/workflows/build_windows.yml
@@ -51,7 +51,7 @@ jobs:
               ..\jom\jom -j2
               ls -a
               cd release
-              cp "D:\a\QOpenHD\Qt\5.15.2\msvc2019_64\bin\*.dll" .
+              cp "D:\\a\\QOpenHD\\Qt\\5.15.2\\msvc2019_64\\bin\\*.dll" .
               ls -a
               cd ../release
               ls -a