diff --git a/gcc/config/mips/t-iris6 b/gcc/config/mips/t-iris6
index e1a4d50ce41..9773eb316e6 100644
--- a/gcc/config/mips/t-iris6
+++ b/gcc/config/mips/t-iris6
@@ -3,7 +3,10 @@
 LIBGCC1 = 
 CROSS_LIBGCC1 = 
 
-MULTILIB_OPTIONS=mips1/mips2/mips3/mips4
+# ??? If no mabi=X option given, but a mipsX option is, then should deal
+# with that.
+# ??? mabi=32 is deliberately left off the list because it doesn't work yet.
+MULTILIB_OPTIONS=mabi=n32/mabi=64
 MULTILIB_DIRNAMES=
 MULTILIB_MATCHES=