diff --git a/src/librustc/middle/trans/deriving.rs b/src/librustc/middle/trans/deriving.rs
index 6865680ec526..6aacab13ed46 100644
--- a/src/librustc/middle/trans/deriving.rs
+++ b/src/librustc/middle/trans/deriving.rs
@@ -23,8 +23,8 @@ use syntax::ast_util::local_def;
 
 /// The kind of deriving method this is.
 enum DerivingKind {
-	BoolKind,	// fn f(&self, other: &other) -> bool
-	UnitKind,	// fn f(&self) -> ()
+    BoolKind,	// fn f(&self, other: &other) -> bool
+    UnitKind,	// fn f(&self) -> ()
 }
 
 impl DerivingKind {