diff --git a/src/libsyntax/ext/deriving.rs b/src/libsyntax/ext/deriving.rs
index ab0361e88ba1..735f2cf9ae1f 100644
--- a/src/libsyntax/ext/deriving.rs
+++ b/src/libsyntax/ext/deriving.rs
@@ -196,7 +196,7 @@ fn expand_deriving_struct_def(cx: ext_ctxt,
                                                   Disjunction);
 
     // Create the implementation.
-    return create_derived_impl(cx, span, type_ident, eq_method, ne_method);    
+    return create_derived_impl(cx, span, type_ident, eq_method, ne_method);
 }
 
 fn expand_deriving_struct_method(cx: ext_ctxt,