diff --git a/src/libcore/libc.rs b/src/libcore/libc.rs
index 80e3a22dcba..ae29bbe3085 100644
--- a/src/libcore/libc.rs
+++ b/src/libcore/libc.rs
@@ -1309,6 +1309,8 @@ fn setenv(name: *c_char, val: *c_char,
                       overwrite: c_int) -> c_int;
             fn unsetenv(name: *c_char) -> c_int;
             fn putenv(string: *c_char) -> c_int;
+
+            fn symlink(path1: *c_char, path2: *c_char) -> c_int;
         }
 
         #[nolink]
@@ -1365,7 +1367,6 @@ fn sysctlnametomib(name: *c_char, mibp: *mut c_int,
     pub mod bsd44 {
     }
 
-
     #[cfg(target_os = "macos")]
     #[nolink]
     #[abi = "cdecl"]