diff --git a/src/lib.rs b/src/lib.rs
index 3573c6f..e95f7bb 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -339,9 +339,7 @@ pub fn fcntl(fd: wasi::Fd, cmd: FcntlCommand) -> Result<i32, ExitCode> {
 }
 
 pub fn mount(
-    source_fd: RawFd,
     source_path: &str,
-    target_fd: RawFd,
     target_path: &str,
     filesystem_type: &str,
     opts: u64,