diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c7df958e2..64644e7a5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -264,7 +264,7 @@ windows:
     - set INCLUDE=C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Include;C:\vs2015\VC\include;C:\Program Files (x86)\Windows Kits\10\Include\10.0.10240.0\ucrt
     - set LIB=C:\vs2015\VC\lib;C:\Program Files (x86)\Windows Kits\10\Lib\10.0.10240.0\ucrt\x64
     - set RUST_BACKTRACE=1
-    - set RUSTFLAGS=-Zorbit=false
+    - set RUSTFLAGS=-Zorbit=off
     - rustup default stable-x86_64-pc-windows-msvc
     - cargo build --release --verbose
     - md5sum target\release\parity >> checksum