diff --git a/.gitlab/Windows-CI.yml b/.gitlab/Windows-CI.yml
index ddd19eef7c..d72ac79d05 100644
--- a/.gitlab/Windows-CI.yml
+++ b/.gitlab/Windows-CI.yml
@@ -12,7 +12,7 @@ win64_build:
     FF_USE_FASTZIP: "true"
     CACHE_COMPRESSION_LEVEL: "fast"
   cache:
-    key: win64-vcpkg-"$CI_COMMIT_REF_SLUG"
+    key: win64-vcpkg-$CI_COMMIT_REF_SLUG
     paths:
       - build\windows\vcpkg_installed
       - .vcpkgCache