diff --git a/src/libstd/macros.rs b/src/libstd/macros.rs
index a79b9f75b7e7..d160a68cfc1f 100644
--- a/src/libstd/macros.rs
+++ b/src/libstd/macros.rs
@@ -463,7 +463,7 @@ pub mod builtin {
     ///
     /// Using this macro is often a bad idea, because if the file is
     /// parsed as an expression, it is going to be placed in the
-    /// surrounding code unhygenically. This could result in variables
+    /// surrounding code unhygienically. This could result in variables
     /// or functions being different from what the file expected if
     /// there are variables or functions that have the same name in
     /// the current file.