diff --git a/ci/windows-docker/install_cargo_utils.ps1 b/ci/windows-docker/install_cargo_utils.ps1
index 976645061..5c45aeb8d 100644
--- a/ci/windows-docker/install_cargo_utils.ps1
+++ b/ci/windows-docker/install_cargo_utils.ps1
@@ -4,7 +4,7 @@ rustup --version
 rustc --version
 cargo --version
 
-if ("$RUST_VERSION" -eq "1.71.1") {
+if ("$env:RUST_VERSION" -eq "1.71.1") {
     cargo install --locked cargo-c --version 0.9.26+cargo-0.74
 } else {
     cargo install --locked cargo-c --version 0.10.3+cargo-0.81