diff --git a/codex-rs/exec-server/src/client.rs b/codex-rs/exec-server/src/client.rs
index 88fce6f4ea..ff3cf37904 100644
--- a/codex-rs/exec-server/src/client.rs
+++ b/codex-rs/exec-server/src/client.rs
@@ -894,6 +894,7 @@ mod tests {
     use super::ExecServerClient;
     use super::ExecServerClientConnectOptions;
     use crate::ProcessId;
+    #[cfg(not(windows))]
     use crate::client_api::ExecServerTransportParams;
     use crate::client_api::StdioExecServerCommand;
     use crate::client_api::StdioExecServerConnectArgs;