diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 3da4ab4e1bfb..c5e24d929f5a 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,7 @@
 2014-01-28  Jason Merrill  <jason@redhat.com>
 
+	* decl.c (duplicate_decls): Tweak.
+
 	PR c++/53756
 	* mangle.c (write_unqualified_name): Handle operator auto.
 
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index c93c7831a089..aca96fcea390 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -1923,13 +1923,13 @@ duplicate_decls (tree newdecl, tree olddecl, bool newdecl_is_friend)
       if (TREE_CODE (newdecl) == FUNCTION_DECL)
 	maybe_instantiate_noexcept (olddecl);
 
-      /* Merge the data types specified in the two decls.  */
-      newtype = merge_types (TREE_TYPE (newdecl), TREE_TYPE (olddecl));
-
       /* For typedefs use the old type, as the new type's DECL_NAME points
 	 at newdecl, which will be ggc_freed.  */
       if (TREE_CODE (newdecl) == TYPE_DECL)
 	newtype = oldtype;
+      else
+	/* Merge the data types specified in the two decls.  */
+	newtype = merge_types (TREE_TYPE (newdecl), TREE_TYPE (olddecl));
 
       if (VAR_P (newdecl))
 	{