diff --git a/src/libstd/sys/unix/os.rs b/src/libstd/sys/unix/os.rs
index bc8562a0a7be..169bb57ef78d 100644
--- a/src/libstd/sys/unix/os.rs
+++ b/src/libstd/sys/unix/os.rs
@@ -25,7 +25,7 @@ use libc::{c_int, c_char, c_void};
 
 const TMPBUF_SZ: usize = 128;
 
-cfg_if! {
+cfg_if::cfg_if! {
     if #[cfg(target_os = "redox")] {
         const PATH_SEPARATOR: u8 = b';';
     } else {
diff --git a/src/libstd/sys/unix/process/process_common.rs b/src/libstd/sys/unix/process/process_common.rs
index 9f81c67b4774..6bb20bbe0879 100644
--- a/src/libstd/sys/unix/process/process_common.rs
+++ b/src/libstd/sys/unix/process/process_common.rs
@@ -12,7 +12,7 @@ use crate::collections::BTreeMap;
 
 use libc::{c_int, gid_t, uid_t, c_char, EXIT_SUCCESS, EXIT_FAILURE};
 
-cfg_if! {
+cfg_if::cfg_if! {
     if #[cfg(target_os = "redox")] {
         const DEV_NULL: &'static str = "null:\0";
     } else {