diff --git a/src/lib/posix_fs.rs b/src/lib/posix_fs.rs
index 3a518c7b966..b1e08538aca 100644
--- a/src/lib/posix_fs.rs
+++ b/src/lib/posix_fs.rs
@@ -1,6 +1,6 @@
 
 native "c-stack-cdecl" mod rustrt {
-    fn rust_list_files(&&path: str) -> [str];
+    fn rust_list_files(path: str) -> [str];
 }
 
 fn list_dir(path: str) -> [str] {
diff --git a/src/lib/win32_fs.rs b/src/lib/win32_fs.rs
index 2fe6acd4399..e527f19b5a5 100644
--- a/src/lib/win32_fs.rs
+++ b/src/lib/win32_fs.rs
@@ -1,8 +1,8 @@
 
 
 native "c-stack-cdecl" mod rustrt {
-    fn rust_list_files(&&path: str) -> [str];
-    fn rust_file_is_dir(&&path: str) -> int;
+    fn rust_list_files(path: str) -> [str];
+    fn rust_file_is_dir(path: str) -> int;
 }
 
 fn list_dir(path: str) -> [str] {