diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 50752a3e652b591008aea14deb9795fd5b14daa8..2b59c938ab702164c3dd8b5614d237d78779144d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,7 +2,7 @@ windows job:
   tags:
     - win
   script:
-    - "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"
+    - "C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Auxiliary/Build/vcvars64.bat"
     - mkdir build
     - cd build
     - cmake -DCMAKE_GENERATOR_PLATFORM=x64 -DOpenCV_DIR="D:/opencv-4.0.1/build/install" -DCUDA_TOOLKIT_ROOT_DIR="C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v10.1" ..