1 files changed, 5 insertions, 5 deletions
diff --git a/src/libstd/os.rs b/src/libstd/os.rs
index 88081d90b40..a4705b78caa 100644
--- a/src/libstd/os.rs
+++ b/src/libstd/os.rs
@@ -1073,19 +1073,19 @@ impl fmt::Show for MapError {
             ErrAlreadyExists => "File mapping for specified file already exists",
             ErrZeroLength => "Zero-length mapping not allowed",
             ErrUnknown(code) => {
-                return write!(out.buf, "Unknown error = {}", code)
+                return write!(out, "Unknown error = {}", code)
             },
             ErrVirtualAlloc(code) => {
-                return write!(out.buf, "VirtualAlloc failure = {}", code)
+                return write!(out, "VirtualAlloc failure = {}", code)
             },
             ErrCreateFileMappingW(code) => {
-                return write!(out.buf, "CreateFileMappingW failure = {}", code)
+                return write!(out, "CreateFileMappingW failure = {}", code)
             },
             ErrMapViewOfFile(code) => {
-                return write!(out.buf, "MapViewOfFile failure = {}", code)
+                return write!(out, "MapViewOfFile failure = {}", code)
             }
         };
-        write!(out.buf, "{}", str)
+        write!(out, "{}", str)
     }
 }