diff --git a/virtualizationservice/vmnic/src/aidl.rs b/virtualizationservice/vmnic/src/aidl.rs
index 69c37b8..cce34f2 100644
--- a/virtualizationservice/vmnic/src/aidl.rs
+++ b/virtualizationservice/vmnic/src/aidl.rs
@@ -27,7 +27,7 @@
 use std::os::fd::{AsRawFd, RawFd};
 use std::slice::from_raw_parts;
 
-const TUNGETIFF: ioctl_num_type = 0x800454d2u32 as c_int;
+const TUNGETIFF: ioctl_num_type = 0x800454d2u32 as ioctl_num_type;
 const TUNSETIFF: ioctl_num_type = 0x400454ca;
 const TUNSETPERSIST: ioctl_num_type = 0x400454cb;
 const SIOCSIFFLAGS: ioctl_num_type = 0x00008914;